* Fix resign order
* Fixed a typo
* Get followers later, add TODOs
* Added a callback parameter to collection insert methods
* Get followers under the lock if necessary
* Extracted the replication of inserts into a separate method
* Move shortcut into replicate method
* Added callbacks for remove, replace and update
* Added missing overrides
* Extracted replication code from modifyLocal and removeLocal
* Update followers under lock also during replace, update, remove
* Fix changes from the last commit for update/replace
* Update comments, add asserts
* Remove changes for document-level locks that will be done in another PR
* Unify replication
* Adapt log messages to the devel ones
* Move common methods from its descendants to TransactionCollection, fix Mock on the way
* More IResearch test / mock fixes
* Relax asserts for nested transactions
* Reformat
* Fix non-babies remove and modify replication
Tobias Gödderz
Frank Celler
jsteemann