Fixed some related issues.

 Write text : Select the text

Improved performance of loading text from old format.

"+" and "-" buttons does nothing if text item is empty.

Now text size in TextItem is the same on separate platforms.

- locked items is not editable now.
- toolbar for text item hides when item is locked

Fixed behavior of toolbar:
toolbar of media items hides after 5s of idle.

Frame buttons

Text object :auto adjust of object works with fewest letters

Frame buttons
Part 1: changes in toolbars