Added Location to Event entity and location text markers to UserPreferences
Extracted IParser from DueParser, created LocationParser
IParser now accepts UserPrefenreces as parameter
Implemented LocationParser
Created ListNameParser
Merged List and CheckList shortcuts preferences
Merged List and CheckList shortcuts preferences
Tested BoardItemNameParser
Board item processors now use BoardItemNameParser
Implemented setting Event location
Merge branch 'setting_event_location'