webgui: insertion into empty datastore (create new empty node), wrong refresh after request and wrong error handling, refs #1406
webgui: show empty datastore to enable edit operations, but bug found. We can not merge only root element with model, so config info about root element is fake and must be repaired (merge), refs #1406
webgui: added support for merging model with root element, refs #1406
webgui: removed probably wrong commited code in commit d7cdcda3, I don't know, why was added, refs #1405
webgui: typeahed in empty subtree is working now and it is possible to generate valid edit-config request from empty subtree. Other datastores than running not working yet, refs #1406
webgui: added functionality to insert new element into empty datastore, refs #1406
Merge branch 'master' into createEmptyModule

Conflicts:
	src/FIT/NetopeerBundle/Models/XMLoperations.php
Merge branch 'master' into createEmptyModule

Conflicts:
	src/FIT/NetopeerBundle/Models/XMLoperations.php
autofocus and auto typeahead init while adding new elem
added root element for every section (which allows to add children for root element), added typeahed while creating empty modul (plus sign in top menu)
suppress of errors while dumping file in dev environment