doc/: Do not mention explicit key bindings

Since we exported help texts into text files, we are no longer able to
refer to the user's key bindings. Drop key binding references from the
online help texts.

Signed-off-by: Lukas Fleischer <calcurse@cryptocrack.de>

doc/add.txt

@@ -2,7 +2,7 @@ Add
 ===
 
 Add an item in either the TODO or Appointment list, depending on which panel is
-selected when you press 'a'.
+selected.
 
 To enter a new item in the TODO list, you will need first to enter the
 description of this new item. Then you will be asked to specify the todo
@@ -10,10 +10,9 @@ priority. This priority is represented by a number going from 9 for the lowest
 priority, to 1 for the highest one. It is still possible to change the item
 priority afterwards, by using the '+' and '-' keys inside the todo panel.
 
-If the APPOINTMENT panel is selected while pressing 'a', you will be able to
-enter either a new appointment or a new all-day long event.  To enter a new
-event, press [ENTER] instead of the item start time, and just fill in the event
-description.
+If the APPOINTMENT panel is selected, you will be able to enter either a new
+appointment or a new all-day long event.  To enter a new event, press [ENTER]
+instead of the item start time, and just fill in the event description.
 
 To enter a new appointment to be added in the APPOINTMENT list, you will need
 to enter successively the time at which the appointment begins, the appointment
@@ -21,7 +20,7 @@ length (either by specifying the end time in [hh:mm] or the duration in
 [+hh:mm], [+xxdxxhxxm] or [+mm] format), and the description of the event.
 
 The day at which occurs the event or appointment is the day currently selected
-in the calendar, so you need to move to the desired day before pressing 'a'.
+in the calendar, so you need to move to the desired day before.
 
 Notes
 -----

doc/copy_paste.txt

@@ -3,8 +3,8 @@ Copy and Paste
 
 Copy and paste the currently selected item. This is useful to quickly copy an
 item from one date to another. To do so, one must first highlight the item that
-needs to be copied, then press 'c' to copy.  Once the new date is chosen in the
-calendar, the appointment panel must be selected and the 'p' key must be
-pressed to paste the item. The item will appear in the appointment panel,
-assigned to the newly selected date.
+needs to be copied, then press the key assigned to the copy function. Once the
+new date is chosen in the calendar, the appointment panel must be selected and
+the paste key must be pressed to paste the item. The item will appear in the
+appointment panel, assigned to the newly selected date.
 

doc/enote.txt

@@ -6,9 +6,9 @@ feature is useful if you do not have enough space to store all of your item
 description, or if you would like to add sub-tasks to an already existing todo
 item for example.
 
-Before pressing the 'n' key, you first need to highlight the item you want the
-note to be attached to. Then you will be driven to an external editor to edit
-your note. This editor is chosen the following way:
+You first need to highlight the item you want the note to be attached to. Then,
+after pressing the edit note key, you will be driven to an external editor to
+edit your note. This editor is chosen the following way:
 
 * If the 'VISUAL' environment variable is set, then this will be the default
   editor to be called.

doc/goto.txt

@@ -9,5 +9,5 @@ displacement keys inside the calendar panel.
 If you hit [ENTER] without specifying any date, Calcurse checks the system
 current date and you will be taken to that date.
 
-Notice that pressing '^G', whatever panel is selected, will select current day
-in the calendar.
+Notice that you can also specify a global key binding to return to the current
+day, no matter which panel is currently selected.

doc/other.txt

@@ -4,8 +4,8 @@ OtherCmd
 Switch between status bar help pages.
 
 Because the terminal screen is too narrow to display all of the available
-commands, you need to press 'o' to see the next set of commands together with
-their key bindings.
+commands, this command can be used to see the next set of commands together
+with their key bindings.
 
-Once the last status bar page is reached, pressing 'o' another time leads you
-back to the first page.
+Once the last status bar page is reached, running the command another time
+leads you back to the first page.

doc/priority.txt

@@ -7,10 +7,10 @@ description. This number goes from 9 for the lowest priority to 1 for the
 highest priority. Todo having higher priorities are placed first (at the top)
 inside the todo panel.
 
-If you want to raise the priority of a todo item, you need to press '+'.  In
-doing so, the number in front of this item will decrease, meaning its priority
-increases. The item position inside the todo panel may change, depending on the
-priority of the items above it.
+By default, if you want to raise the priority of a todo item, you need to press
+'+'.  In doing so, the number in front of this item will decrease, meaning its
+priority increases. The item position inside the todo panel may change,
+depending on the priority of the items above it.
 
 At the opposite, to lower a todo priority, press '-'. The todo position may
 also change depending on the priority of the items below.

doc/repeat.txt

@@ -4,8 +4,9 @@ Repeat
 Repeat an event or an appointment.
 
 You must first select the item to be repeated by moving inside the appointment
-panel. Then pressing 'r' will lead you to a set of three questions, with which
-you will be able to specify the repetition characteristics:
+panel. Then running the repeat command will lead you to a set of three
+questions, with which you will be able to specify the repetition
+characteristics:
 
   o        type: you can choose between a daily, weekly, monthly or
                  yearly repetition by pressing 'D', 'W', 'M' or 'Y'

doc/view.txt

@@ -5,8 +5,8 @@ View the item you select in either the Todo or Appointment panel.
 
 This is useful when an event description is longer than the available space to
 display it. If that is the case, the description will be shortened and its end
-replaced by '...'. To be able to read the entire description, just press 'v'
-and a popup window will appear, containing the whole event.
+replaced by '...'. To be able to read the entire description, just run the view
+command and a popup window will appear, containing the whole event.
 
 Press any key to close the popup window and go back to the main Calcurse
 screen.

doc/vnote.txt

@@ -5,10 +5,10 @@ View a note which was previously attached to an item (an item which owns a note
 has a '>' sign in front of it).
 
 This command only permits to view the note, not to edit it (to do so, use the
-'EditNote' command, by pressing the 'n' key).
+'EditNote' command).
 
-Once you highlighted an item with a note attached to it, and the '>' key was
-pressed, you will be driven to an external pager to view that note.  The
+Once you highlighted an item with a note attached to it, and the view note key
+was pressed, you will be driven to an external pager to view that note.  The
 default pager is chosen the following way:
 
 * If the 'PAGER' environment variable is set, then this will be the default