Only show one, more helpful error instead of two non-helpful errors.
Don't show the 'no configured tools' message if there is a proxy there.
Return to the Tool configure page when editing a proxy if you came
from it.

Conflicts:
	mod/lti/version.php

All user input that is usually displayed through format_strings with
filters like mulitlang applied should be converted to text as well.

Fix function naming
Fix param types
Fix error popping up twice with incorrect URL
Add confirm dialog when you delete a tool
Show orphaned tool proxies in list
Fix interface jumping up and down
Change to use notification stack
Change capabilities in db/services.php
Add loading animation after registering tool
Show loading animation until tools are rendered

version = 2016052300 release version
requires= 2016051900 current rc1 version

Probably as a result of recent changes in the way how forms client side
validators are trigerred (MDL-52826), the field validator has been
triggered before the underlying textarea's values property is updated by
TinyMCE. This led to marking such a field as "required" even if the
value is provided.

Inspired by http://stackoverflow.com/questions/2122085/
this patch adds a new onchange callback that automatically keeps the
underlying textarea synced with the editor iframe. Relevant API docs:
http://archive.tinymce.com/wiki.php/Configuration3x:onchange_callback

I was also trying to call the save() method via the editor's onSubmit
method but that one seems to be also triggered only after the validator.

Added the fields of encoding and separator so that the user has
more control when uploading a csv assignment grading file.

To test backup/restore.