Moved relTooltip jQuery init from `editcommon.js` to `editload.js` (refs #3762)

Also:
- Added loading of `editload.js` after `editcommon.js` in ALLEDITJS.
Call editmode($action) in CONFIRMMAIL action (refs #3762)

Call editmode($action) to load all JS files needed for edition support, and
removed loading of EDITJS.
Merge pull request #749 from eguaj/3.2-A3762

Moved relTooltip jQuery init from `editcommon.js` to `editload.js` (closes #3762)