commitmonitor Code

Use the hidden registry parameter "Software\\CommitMonitor\\DiffParameters" to pass additional Parameters to the diff command, e.g. "-w" to ignore whitespace

(Closes issue #170) : Enhancement: Provide a command to create new project by copying it from an existing project

(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.