commitmonitor Code

whitespace changes

* 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.

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...