Use MutationObserver to detect if a saveProgress event was received,
which will trigger an animation.
Before this, `helper.admin$('#response').is(':visible')` was true
after the page loaded and before clicking the Save button, so there
was a possibility that after clicking Save, but before sending the
socketio message to the server, the visibility is checked and returns
true, so the page gets reloaded before the changed settings have been
saved.
Cheerio provides jQuery-like objects but they wrap DOM Node-like
objects that are not 100% API compatible with the DOM spec. Because of
this, contentcollector, which is used in browsers and in Node.js
during HTML import, has until now needed to support two different
APIs. This commit modifies HTML import to use jsdom instead of cheerio
and simplifies contentcollector.
* Define utility functions above their use to silence lint warnings.
* Use `.css()` instead of `.attr('style')` to manipulate style.
* Pass an object to `.attr()` rather than call once per attribute.
* Take advantage of chaining.
* Inline unnecessary `padUrl` variable.
* Delete some unnecessary comments.
Readability is increased by explicitly checking if jquery/sendkeys was
already loaded before evaluating it in the context of ace_inner and the
enclosing container (pad.html). Note that sendkeys is no longer
evaluated in the context of ace_outer, as this isn't needed
Also removes some IE 8/9 legacy code
This makes core and plugin tests consistent with each other, makes it
possible to `require()` relative paths in spec files, simplifies the
code somewhat, and should make it easier to move away from
require-kernel.
Also:
* Wrap plugin tests inside a `describe()` that contains the plugin
name to make it easier to grep for a plugin's tests and for
consistency with core tests.
* Add "<core>" to the core test descriptions to make it easier to
distinguish them from plugin tests.
