Tidied up AspectJ definition:

- removed high relevance from already complex specific modes
- removed `keywords` duplicating `beginKeywords`
Fix error for Windows machines

Apparently gearjs uses the Unix version of file paths in memory, even on
Windows. So for `_.find` to actually work everywhere, we need to force the
path into the Unix style of `path/to/file`.
Moved AspectJ snippet and class reference close to Java-like languages.
Merge branch 'fix/build-windows'
Added Hakan Özler to AUTHORS.ru.txt + moved notice about AspectJ in CHANGES.md to a new "master" section.
Merge branch 'master' of github.com:isagalaev/highlight.js