Refactoring configuration and file paths.

- Ditched use of web.session, just use web.cookies.
- Added detection of configuration file location.
- Removed ./var directory, everything is now in standard locations, but also
  configurable.
- Added more standard version management.



git-svn-id: https://humgenprojects.lumc.nl/svn/mutalyzer/branches/refactor-mutalyzer-branch@222 eb6bd6ab-9ccd-42b9-aceb-e2899b4a52f1