Move message generator out of the ActiveSync server and into the test runner
Check bodies in test_activesync_html.js
Move data/lib/mailapi/testhelper.js to test/unit/resources/th_main.js
Merge pull request #193 from mozsquib/as-message-generator

Move the messageGenerator out of the ActiveSync fake server. r=asuth for in-progress test-only changes to avoid bitrot while work continues.