Update junit selenium qunit runner

(cherry picked from commit 1408c48c2a3a7c34807869722ea27e69bc167b71)
Merge branch 'hotfix-0.25.x' of github.com:alohaeditor/Aloha-Editor into dev
Merge branch 'hotfix-0.25.x' of github.com:alohaeditor/Aloha-Editor into dev
Added check for heading hierarchies

Check the hierarchy of all headings in an editable. If the hierarchy is violated, a class "aloha-heading-hierarchy-violated" is added to the heading. It is also checked if the hierarchy of a heading is lower than the highest allowed hierarchy in the configuration.
Merge pull request #1148 from rainerda/check-headlines-hierarchy

Added check for heading hierarchies
working with SVG element

When I tried to work with a SVG element in the editor, I get the following error.
Uncaught TypeError: Object #<SVGAnimatedString> has no method 'indexOf' 

Apparently, SVG element's className is not a string but an object. I update the pruneElem() function and the editor is happy. The following is the SVG element I used for testing.
< svg width="300" height="200">
  < polygon points="100,10 40,180 190,60 10,60 160,180"
  style="fill:lime;stroke:purple;stroke-width:5;fill-rule:evenodd;" />
< /svg>
from http://www.w3schools.com/html/html5_svg.asp

Please consider the pull request. Thanks.
The VideoBlock Plugin allows you to paste a YouTube URL into the active editable and it will be replaced by the appropriate iframe embed code.
Merge branch 'hotfix' of github.com:alohaeditor/Aloha-Editor into dev
Introduce Content Rules for uniform content restriction

This module is designed as a single point of configuration that will provide a
contract to uniformly effect editing interactions and the user interface in
cohesive way.
Correct typo and add missing PubSub dependency
Lint content-rules
Merge pull request #1154 from cecilialam/patch-4

working with SVG element
Add inline note and changelong for SVG className fix
Correct some typoes
Support block formatting key combos
Remove errant debugger statements
Improve function name and documentation
d̶i̶s̶s̶a̶l̶l̶o̶w̶e̶d̶ → disallowed
Ensure that content rules are applied to editables at creation

Also fixed:

 * Correct use of $.merge instead of $.extend
 * Prevent generating broken markup in applyRules()
 * Improve inline documentation
Correct typo