+ Update Schedule: Changed IsShared to use Category, changed check-in start/end times to be offsets from schedule start time
Add Migration for Schedule changes and update to schedule detail page
check-in css theme typo
removed a prior new checkin migration and recreated to follow the ScheduleCategory migration.
update RockCSharpMigrationCodeGenerator so that it can be used for 3rd Party Rock plugins and with Entity Framework 6
removed outdated CodeGen script and updated the new one to be 2008 compatible.
+ Fix exeption that was occurring when adding a group attribute
Fix up bug in updated RockCSharpMigrationCodeGenerator.  Now it uses the DbContext's Assembly instead of the current assembly for tablelookups.  This won't effect Rock core, just 3rd party
Redid how ContextAssembly filtering is done in RockCSharpMigrationCodeGenerator.  Now it does it all on one spot, and covers all situations.  It also has an option not to filter now.
Merge branch 'origin/develop'

Conflicts:
	Rock/Rock.csproj