This removes most of the legacy upstream config madness by not using
weird config files spread all over the place.
This isn't the solution to other config reading fragility issues, but
it does move the whole config back to the central airtime.conf file.
This is the results of sed -i -e 's|/etc/airtime-saas/|/etc/airtime/|' `grep -irl 'airtime-saas' airtime_mvc/ python_apps/` :P
It might need more testing, the airtime-saas part never really made sense, zf1 has environments for that, ie you would create a saas env based on production for instance.
I beleive legacy upstream was using this to share configuration between customers (ie. analyser runs only once and writes to a shared S3 bucket). I assume they mount the airtime-saas folder onto individual customers instances with a global config. Like I said, I don't feel that this makes sense since all it does is make hacking at the configs in airtime-saas a bit easier. A serious SaaS operation should be using something like puppet or ansible to achieve this.
Also fixes them elsewhere, apart from having switched to a vendorized version, I also used one that is already namespaced.
The easy way out here is to use it in the namespaced fashion, it is only used in a few places and I know the library well enough to be certain that nothing much changed apart from the namespacing.
* Moved all the remaining DEB requirements into the requirements files
* The installer should now be distro agnostic (unless you ask it to
install third-party deps for you)
* Fixed pypo not being able to find replaygainupdater
* Tweaked a bunch of styling for the installer