Requisitions UI Enhancements

There are certain features of the old UI that have not been implemented yet on the new UI, mostly because the ReST API behind the requisitions and foreign source definitions require code changes.

Here are the features I'm planning to add:

• Cloning foreign source definitions
• Resetting foreign source definitions
• Implementing the deployed requisition statistics (to know which nodes have been added to the database).
• Update the UI by requesting the deployed requisitions again, to avoid reload everything.
• Implement the AngularJS version of the Quick-Add node (embedded on the Requisitions App, and as a standalone App).