Display text columns above widget overlays.
Add delete confirmation before deleting section.
Add upgrade notice if is using MP < 1.4.0.
Focus the editor when invoking it.
Don't show Y scrollbar in editor modal
Init iframes after sorting in Firefox.
Better focusing of configuration elements.
Revert "Add delete confirmation before deleting section."

This reverts commit 4d9f525e1996ff541a4439fba339c10c62ea5404.
Change upgrade notice phrasing.
Make sure make plus classes are always added.
Version 1.4.0.
Merge branch 'release-1.4.0' into develop
Add correct keys for caption color.
Fix typos.
Add styling for edit widget link.
Sync with develop.