Ignore empty strings for text selection.
They were causing double text selection.
Merge pull request #2781 from waddlesplash/textselection

Ignore empty strings for text selection
Add "cursor: text;" to textLayer div CSS.
Fixes problem caused by e4e4b1ab4ea4a6e44b84efa5a67237e2ad044b.
Merge pull request #2821 from waddlesplash/textselection

Add "cursor: text;" to textLayer div CSS.
Add myself to AUTHORS file.
Merge pull request #2823 from waddlesplash/authors

Add myself to AUTHORS file