OO-2007: new light weight form fragments mechanism to reuse groups of fields without embedding then inside a separate Form/FormController logic.

OO-2007: extends ModuleConfiguration with fragments (subset with shared key prefix) and strongly typed API

OO-2007: add access to link title text - fix issue where changing translator was not propagating to internal component

OO-2012: use the formatter dedicated to survey and self if need in the replace process in QTI course elements

OO-725 remove unnecessary methods and variables, fixing visibility of members, fixing controller chain leaks