Changes to local regions registration

Changes:

• all regions are now prefixed with GL_ which makes it easy to keep track of Glimr regions
• improved code flow for region registration and monitoring using less resources while being more fault tolerant
• changes to cases when switching from or to background while tracking and active region

Important:
since we introduced our own prefix, it's important to know that we will purge all registered regions the first time if you are using KATConfiugration.shareRegions