Changed to be more consistent with bash-git-prompt

- More closely emulates https://github.com/magicmonty/bash-git-prompt
- Enabled UTF-8 support
- added staged, untracked and modified counts for SVN and git
- changes *not* made to the other version control system parsing
- diverges in behavior from original project
Changed other default symbols to UTF-8
Merge branch 'zbeekman-master'