Changes

# (in progress) {{Bug|500142}} Integrate mozmill into the build system - tests can be run with "make mozmill" and "make mozmill-one"# (in progress) {{Bug|504304}} Test VM/buildbot slave for initial results and automation. Aim is to a) check the stability, b) use as a platform for implementing and testing the necessary mozmill test support infrastructure, c) get initial results alongside builds on day-to-day basis.# (about to start) {{Bug|TBD}} Integrate httpd server into mozmill run scripts - get an idea for how to integrate fake servers (and be able to run content policy scripts).