Fix '~' on non-US keyboards.
Migrates the following plugins to use ARC:
- Core Support
- Bezel Interface
- Primer Interface
- Finder Module
- HotKey Triggers
Merge pull request #1696 from quicksilver/t/fix-accented-chars

Fix '~' on non-US keyboards.
Merge pull request #1710 from quicksilver/arc-plugins

Migrates the QS plugins to use ARC