Add Timed Transcripts Editor.
Update changelog. Fixed bugs.

Update tests for use unique mongo db.
Add documentation to js.
Adding debugger comments.
Something is failing on sandbox blades 01. Will debug, and then
remove comments.
Add documentation to js.
Further adding debugger comments.
Add documentation to js.
Adding file sort for JS files.
Reverting debugging commits.
Fix for relative path, and sorting of JS files.
Fixes in comments.
Updating transcripts_acceptance_tests.odt in docs.

Section "Other possible scenarios" at the end has been revised.