commitmonitor Code

Add a separator between the date and time, and remove the leading space.

Save the data when quitting CM via the main dialog.

Show the date as well as the time when the project was last checked.

* handle WM_QUERYENDSESSION in the main dialog window
* always return TRUE for WM_QUERYENDSESSION

Use the singleton class.

Check the pointer before accessing it.

Remove unneeded variables.

Use `empty()` instead of `size()` where possible.

Initialize variables and fix a resource leak.

Found by Coverity.

Patch from Björn Carlsson:
New option to scroll to earliest unread item, when project is selected