Solved issue with children references not updating with codebase fragment save

MadmpFragment children references should be updated when the parent is 'touched'

Added method to save fragments coming from codebase run

Added Contributor Field

Solved issue where parent's reference to children wouldn't update when deleting all the children of the same property

Fragments with custom value shpuld be displayed properly where get_full_framgent is called

User can add custom values to complex multiple registries & homogenised custom value behaviour

Changed the way fragments with custom_value are exported

Integrated Select2 and first version of Registry selectable multiple times

User can now put his own value when a registry is overridable

Solved problem occuring when a complex registry doesn't have a schema_id

Complex registries values should be saved into a madmp_fragment

Solved issue with contributors attribution to the meta & project fragments during plan creation

Merged feature/registries into dev

Value should be saved in plan for complex registries

Merged feature/contributors

Fixes to the meta/project creation when a plan is created

User can now edit fragments in fragment picker

Fix form save when a fragment is selected from the fragment select

Fixes for modal display & RODescription fragment creation

Solved issue with missing sub fragments when changing form

Temporary fixes

Fix to the madmp_fragment delete

Sub_fragment initialization & save should be more reliable

Small bug fix in dbid generation

Changed the way dbid are generated

Solved issue with madmp_fragment to_s when values are nil

Solved issues with Project Details informations display & save

Solved issue with dmp fragments function

Added required indicator on fields, modal shouldn't save when required field are not filled