Ignore by pub generated files
Add static HTML interface and stylesheets
Ignore additional directory by pub: web/packages/
Dynamically rewrite HTML script tags for dart2js

Add pub package 'browser'. It uses javascript to
update all <script type='application/dart' ...>.
This is for browsers that do not have a dart vm.
Dart2js compiles dart scripts to javascript which
then get included instead of .dart files.
Manipulate DOM tree with Dart to save messages

Those messages will be lost when leaving page.
Add class for multiple lists in window.localStorage
Persist posted messages across page reloads
Ignore dart2js generated files