Create web app task for axiom-shell.
Add static http server task to run web_app.

* Due to a Chrome bug (crbug/341909), html imports don't work on page loaded from the local file system, so we have to run the axiom-shell web app form a local server for testing.
Fix polymer loading issue.
Fix typo.

Axiom-shell app is now working end-2-end.
Move polymer components to "lib/polymer"

These components are shared between the Chrome App and the Web App.
Fix issue with hterm.
Convert CRLF to LF.
Minor cleanup.
Create startup code specific to web app.
Revert change to chrome app code (not needed anymore).
Merge pull request #2 from rpaquay/create-web-app

Create web app target for axiom-shell.