add travis database configs to support multiple databases
read configs into test suite
add database to environment as part of the build matrix
trying injection to set the test db
fix postgres alias
add ability to handle MySQL booleans
fix boolean test so it knows it is working with a boolean value
fix feed descendant lists to be in same order
Merge branch 'refs/heads/master' into travis_dbs

* refs/heads/master:
  add hook for content overriding
  only catch MissingTemplate exceptions
  only include key if available
  Disable turbolinks from screens#index to screens#show as a workaround for #848.
  pa should handle activity from plugins
  Round resize calculations up, close #862.
  Only render 404 for single-object model based pages per #857.
only build sqlite all the time

testing using ruby to build mysql and postgres every so often
erb should parse first

renaming travis config to allow for variable use
make it a yml file
sliming the build matrix
Merge pull request #861 from concerto/travis_dbs

add travis database configs to support multiple databases to close #860