Fixing workspace import/export.
Fixing resource rights editions for the root.
Merge branch 'master' of https://github.com/claroline/Claroline into refactoring-for-unit-tests

Conflicts:
	src/plugin/Claroline/RssReaderBundle
Using instanceof instead of get_class
Merge branch 'master' of https://github.com/claroline/Claroline into refactoring-for-unit-tests
Merge pull request #107 from claroline/refactoring-for-unit-tests

Refactoring for unit tests