commitmonitor Code

Follow-up to r542:
Only use the include list if it is not empty.

(Closes issue #266) : Enhancement: when clicking notification, automatically select project in tree

(Closes issue #281) : Single click on tray icon option

(Closes issue #275) : Ability to monitor commits of certain users

* add a new section in the URLs dialog which takes a list of users to include

(Closes issue #163) : Group popups (should wait some seconds for grouping several commits)

Fix compiler warnings.

convert tabs to spaces.

(Closes issue #103) : "Automatically create diffs of commits" was useful option

(Closes issue #234) : Remember last selected project

(Fixes issue #225) : Typo while checking repositories