commitmonitor Code

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

When adding log entries to the list control, only add entries that match the filter string.
This fixes issue #75.