[WO-273] Remove node deps

* Remove node-shims
* Remove multiple forge modules
* Add minified forge build under src/lib/forge
* Remove all transitive node-deps like inbox and simplesmtp from grunt copy
* Update to browser-ports in package.js for imap-client and mail-reader
Update crypto lib version
[WO-316] imap-client works
integrate pgpmailer
use imapclient v0.2.2
Merge pull request #51 from whiteout-io/dev/browser

Dev/browser