typo in helveticons.less
WIP on image uploading

UX work - broken atm.
styling cleanup
Merge branch '7.0.0' of https://github.com/umbraco/Umbraco-CMS into 7.0.0
Canvas directive for preview
WIP on sorting directive, but index switching works now
Got macro content loading in editor async updated more of the macro plugin to ensure the macro contents cannot be edited.
Merge remote-tracking branch 'origin/7.0.0' into 7.0.0
Updates textbox/textarea property editors to show field level validation for the regex/required server validation.
Fixes width styles for prop editors
Fixed more styling and validation bits for insert macro dialog.
Updates to folderbrowser view - still WIP.

Needs code review as there's some non-clean NG work needed to provide
the clean view. Upload haven't been styled yet. Working on it.