Started support for editor view.
Moved comment elements to be added relative to content area instad of
specific target reference element.
Added relocating on screen size change.
Changes the name of our spacing variables due to the prefixing -/_
meaning private in the use of new "use" rather than include.
All now modular too, so all variables/mixins are accessed via their
package.
Also renamed variables file to vars for simpler/cleaner access/writing.
eg. '$-m' is now 'vars.$m'
- Prevented image toolbars showing for objects embeds due to tinymce
image placeholder, and added media toolbar.
- Fixed height of object embed placeholder being forced to auto
when in the editor, allowing height attributed to be properly
reflected as it would on normal page view.
Closes#4974
Inline with A11y recommendations where color may not be reliable on its
own.
Tested various content link scenarios across chrome, safari & FF.
For #4939
Required a lot of working around TinyMCE since it added a
preview/wrapper element in the editor which complicates things.
Added view new "fixes.js" file so large hacks to default TinyMCe
functionality are kept in one place.
