Do not put all files under version control in example hooks

Modify the Git hooks such they only add known data files to the index.

Signed-off-by: Lukas Fleischer <lfleischer@calcurse.org>

contrib/caldav/hooks/post-sync

@@ -5,7 +5,7 @@
 
 cd "$HOME"/.calcurse/
 
-git add *
+git add apts conf keys todo
 if ! git diff-index --quiet --cached HEAD; then
 	git commit -m "Automatic commit by the post-sync hook"
 fi

contrib/hooks/post-save

@@ -8,7 +8,7 @@ cd "$HOME"/.calcurse/
 # Do not make commits when synchronizing with a CalDAV server.
 [ -f caldav/lock ] && exit
 
-git add *
+git add apts conf keys todo
 if ! git diff-index --quiet --cached HEAD; then
 	git commit -m "Automatic commit by the post-save hook"
 fi