Merge v0.2 into master

Fixes:
- Remove old corporation members when they are no longer part of a corp
- Fix typo in `seat:find-sick-keys` command
- Fix Mail Read page title
- Add fixes for Dispatcher 1.2.1 and Laravel 4.1.26

New:
- Add a corporation Ledger
- Slightly Reworked Index Page
- Add ability to re-enable disabled keys