SERVER-11611: prep work to remove DataFileMgr::insertWithObjMod
SERVER-11611: NamespaceDetails::emptyCappedCollection doesn't use insertWithObjMod to create an index
SERVER-11611: remove all references to theDataFileMgr.insert* from dbtests
SERVER-11611: re-write user insert paths to not use DataFileMgr, and use Collection directly
fix whitespace
SERVER-11611: move all user facing inserts to Collection::insertDocument
SERVER-11611: fix some error reporting on write comamnds and _id as Regex
SERVER-11611: update error codes
SERVER-11611: correctly refuse to insert when cannot index
SERVER-11611: fix some includes and dead test code
SERVER-11611: some cleaning of insert.(h|cpp) based on code reviews
SERVER-11611: fix index creation error code propogation
SERVER-11611: re-add comment about when can interrupt index build