More robust handling of schemas

Fixes #240
highlightEntity and selectStructureTag now mutually exclusive

Fixes #249
Remove entity preserves contents by default

Fixes #248
Less aggressive selection clearing in highlightEntity
Fix for notes in Orlando, added xpathSelector to mappings

Partially fixes #253
Orlando date fix
Moved annotations to mappings
Can now change tagged entity

Fixes #247
Added loading mask
Orlando templates added back to index

#256
Added CWRC Entry schema
Fixes for Orlando and TEI schemas
Fixes #258
Removed unnecessary var declaration
Removed schema specific code from manager

#259
Remove extra spaces from entity title
Added note entity functions, removed schema specific code

#259
Fixes for entity adding

StructureTree now shows proper entity tags and contents
Fix for schema mappings changes

34463ffc84348e52dcb3b1525ef4efbbc075367c
Improvements when switching between overlap modes

#244