commitmonitor Code

* add an empty line after the license header
* remove unneeded empty lines at the end of files
* use the right case for the includes
* always use <> for system headers
* update ext/Versions.txt

convert tabs to spaces.

Fix broken build.

Indicate the GPL license.

Improve the search bar a little bit.

Add a 'find bar' to the diff viewer which does searching FF style.
Not yet completely working and it looks ugly right now...

Set the window title of the diff viewer according to the diffed project and revision.

* Use a separate window for the diff viewer. That window has the scintilla edit control as a child window.
* Remember the size of the diff viewer between sessions.

Check if the diff file can be shown as UTF8.

Add a diff viewer based on scintilla.