fix missing data['error']
translatable 'Subcategories' on page category
Merge pull request #72 from dronord/2.0-Development

fix missing data['error']
Replace goedit with redactor
update jquery / jquery UI
fix some language items
make some legacy css classes match the new format
replace goedit references with redactor
update css classes
update css classes and move related products to the bottom for mobile devices
Merge view cart & checkout summary table

There is an additional if statement included to add the ability to
update quantities on the view cart page.
Fix Firefox bug where the image upload form is hidden.
update
Update licenses

Put all related licenses into a single text file and updated GoCart
license.
Add gocart attribution to footer.
Update logo on login page.
Update media manager to work with redactor
Fix for issue #75 (thx abulte)
Added instructional text to installation regarding database
updated