Add a form page to edit script text.
Add a link to process all scripts.
add script.default_script?
Merge branch 'finished' into edit_scripts_form
fix issue with 'script id not found' and new path URLs.
add error in form view when script file not found.
script editor cleanup.
- remove unneeded parameter filter in scripts_controller
- slight adjustments to admin and script index pages
set script.name input field readonly
Merge pull request #615 from code-dot-org/edit_scripts_form

Edit script form and update scripts link