Settings View: Fixes #401 incomplete label display in settings
Settings View: Add checkbox to enable 'beta' releases
Autoupdate: Add check for update type

The update type can be 'stable' or 'beta'. It will also allow adding 'daily' in the future if required
QGCCore: Fix to remember if update is 'beta' or 'stable'
Autoupdate: Fix debug message
configuration: update to 2.0.14-rc2
Autoupdate: Fixes RC version compare
configuration: update to 2.0.14-rc3