commitmonitor Code

(Closes issue #234) : Remember last selected project

Mention how to use regex filter strings in the tooltip.

(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 #160) : Enhancement - add toolbar button to "mark node as read"

(Closes issue #198) : Negative filter
Use '-' as the first char of the filter to negate it.

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

(Fixes issue #196) : Show Diff not working
* before using TSVN to show the diff, check the version of the TortoiseProc.exe and only use it if its version is 1.5 or higher.

Replace Tabulators (\t) with spaces, because the listview cannot display them correctly

- Corrected the height of the treeview.