email changes

- make email destinations more configurable
- remove crappy SMTP logging appender
- cleanup email code / templates
remove unnecessary logging dep
notify on all completions
template tweaks
more email tweaks
send task completed from decommissioning
more work on email config changes
some more specific email settings
Reconcile tasks using mesos framework API

- fixes an issue where the REST API is still catching up on task
reports and Singularity startup considers them lost
- instead of using the REST API on startup
- allows reconciliation to happen periodically in case of failures
also refactor pollers
fix bug
fix issue where task status isn't configured
add logging to reconcile
formatting
fix template issue
handle invalid task states
request pause + unpause + removed mails
jade fix
Remove resources section.

This section is not required, the generated-sources folder is picked up by the
build-helper plugin in the pom.
better task reconciliation for 0.20.x