make the echo server sample app run in firefox
update path for chrome app
updated package to use latest uproxy-lib
removed dup in deps & sorted deps
Merge pull request #145 from uProxy/iislucas-roll-release

Updating package for release to master
Merge branch 'dev' into trevj-echo-firefox
factor out common echo server component and make echo server sample work for firefox
Merge pull request #144 from uProxy/trevj-echo-firefox

echo server for firefox
Merge pull request #143 from uProxy/lucyhe-polymer_ui_for_copypaste

Create Polymer UI for copypaste sample
Translate text only as necessary.

i.e. instead of translating the entire app when a new element is added,
only translate the text within the new element.
Also, store messages.json locally so that it is only fetched when the
language is changed.
Merge remote-tracking branch 'origin/dev' into lucyhe-add_arabic_translation