Added option to set base url so it will work with SSH urls now.

Stricter matching to prevent false positives.
Added "View pull requests" tab in windows form.
Added approve and merge pull request classes.

Added GetPullRequest class
Add merge and approve function
Add approve and merge buttons to form
Performance optimizations

Added threading to prevent gitextensions from not responding while loading pull requests
Bug fixes
UI changes
UI Changes
Merge branch 'pr/n2157_NamesTwister'