implemented code to allow Live Preview Base URL setting to be used for preview pane (issue33)
getting all open inline editors to refresh when switching/adding media queries (issue57)
providing feedback to user when trying to switch to responsive mode and unable to (issue33)
providing feedback to user when trying to switch to responsive mode and unable to (issue33)
added feedback to use when preview pane does not load correctly (issue33)
Merge branch 'issue33'