commitmonitor Code

In case a selection in the tree view is invalid because of recalculated data, pass the url of the selected project to the refresh function so the previously selected tree item can be selected again.

Sort the content by column if there's a click on the column header.
(Closes issue #74) : Sortable columns

Add checkbox to hide ignored users also in the main dialog.
(Closes issue #351) : allow hiding ignored commits in the main dialog

(Closes issue #315) : Enable Ctrl+A for the log box

convert tabs to spaces.

(Closes issue #234) : Remember last selected project

(Closes issue #205) : Enhancement: Refresh single node

* introduce variable for single url. In the refresh thread, only work on that url if it is set.
* add menu for "check now" to the tree view items which only check that selected item.
* rename "refresh all on next check" to "refresh all".

(Closes issue #220) : improve dialog-UI on Vista+

(Closes issue #186) : Doubleclick clears filter text
* subclass the edit control to handle the doubleclicks.

(Fixes issue #188) : Filtered results is infinitely updating