Removing MooTools dependencies from core.js

[AshanFernando]

Under GSoC MooTools to jQuery project, this PR removes the MooTools dependencies in core.js file.

Feature Tracker Item:
http://joomlacode.org/gf/project/joomla/tracker/?action=TrackerItemEdit&tracker_item_id=31583&start=500

[betweenbrain]

Thanks @AshanFernando!

[betweenbrain]

There is a merge conflict with this line, and it appears that it needs to be if (typeof(task) !== 'undefined' && task !== "") { per 09ad7b6

[AshanFernando]

The modifications are sent with the new PR
#2687

[betweenbrain]

Hello @AshanFernando,

My apologies for any confusion that I may have caused with this pull request. It seems that I was too quick to merge it as we may need to deprecate JHtmlBehavior::framework for 4.0. Please see 6b86515 for the corresponding discussion.

I'd very much like to your work into Joomla as soon as possible, but I will need to speak to the others how best to approach this.

In the meantime, it seems as though Github will not allow me to reopen this pull request. Would it be possible to see if you can reopen it by pushing more commits to this branch, or make a new pull request, with an update from the comment I left at https://github.com/joomla/joomla-cms/pull/2010/files#r8267444 ?

[AshanFernando]

Hi Matt, I will check on the issue and please update the findings you get after the discussion with others

[Bakual]

@AshanFernando I have an idea how it could be done after your PR is merged:

• Add a new function JHtmlBehavior::core which loads jQuery and core.js.
• Replace the call for jQuery and core.js in JHtmlBehavior::framework with this new function. This will move this parts out and we will be able to easily deprecate the function in a later stage.
• In JHtmlBehavior::multiselect and similar functions we change JHtml::_('script', 'system/multiselect.js', true, true); to JHtml::_('script', 'system/multiselect.js', false, true); and add a call to JHtmlBehavior::core instead.

I think that should work then. What do you think?