commitmonitor Code

(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.

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

(Closes issue #2) : Add export/import conf file support
* add class to encrypt sensitive data in the exported file
* add class for ini files
* add new dialog to enter a password for encryption
* add exporting/importing functions to the CUrlInfos class

(Closes issue #184) : Allow to mark a change as new/unread
* add command to set the state of an item as unread.
* only mark an item as read when the item gets selected, not unselected.