[issue-313] Add Editor connector
[issue-313] Clone textarea
[issue-313] Log file changes
[issue-313] Improve log message
[issue-313] Use theme name
[issue-313] Make sure `get_current_screen` function exists
[issue-313] Save file data in static var on admin_init hook
[issue-313] Add method to check if edition is requested
[issue-313] Use new method in admin_init hook callback
[issue-313] Compare file contents
[issue-313] Remove redundant method
[issue-313] Remove client-side solution
[issue-313] Ignore theme editor changes in Installer connector
[issue-313] Add action link to Edit File
Add Edit Theme action link
[issue-313] Simplify log message
[issue-313] Update connector name to Theme Editor
[issue-313] Use theme name as Context
[issue-313] Change action to Updated
[issue-313] Hide action links for users without permissions