+ Tooltip support for F0FForm fieldsets
Use native Joomla tooltips for F0FRenderJoomla and F0FRenderJoomla3. Use Bootstrap tooltips for F0FRenderStrapper. Also refactored F0F renderers.
Uncomment renderFieldset() and renderFieldsetLabel() at F0FRenderAbstract and convert them to regular methods (thanks, @nikosdion!)
Remove Strapper HTML from F0FRenderJoomla. It's less prettier but else backward compatibility would be broken.
Don't render whitespace inside <label>
The HTML classes should be fof (f-oh-f) not f0f (f-zero-f)
Merge pull request #340 from jurianeven/feature/tooltip

Tooltip support
Wrap backend output in various classes and add #akeeba-strapper.

Also refactored preRender(): return immediately when $platform->isCli()
Rename akeeba ID of F0FRenderJoomla and also add classes to F0FRenderJoomla3