Unit test clean-up: statics

Resolves: https://www.pivotaltracker.com/story/show/58814930

Removed unneeded static methods from NamespaceTools
Removed an unneeded static from FedoraTypesUtils
Removed getBinary methods
Removing now-unneeded static mocking
Removing unneeded static method from DefaultPropertiesLoader
test basic node HTML responses using HTMLUnit

Fixes https://www.pivotaltracker.com/story/show/60188408
expose java errors from select ajax requests
add HTML rendering for fcr:nodetypes
fix up namespace form to use bootstrap form groups
Update FedoraContent to do the right thing with the Slug: header, and remove fcr:new reference.
Fix backup and versions tests to mint unique object ids
Update .travis.yml
Update .travis.yml
Merge pull request #140 from futures/htmlunit

test basic node HTML responses using HTMLUnit
Revert .travis.yml changes
Use defaults for the travis.yml
add consistent logging configuration; use INFO for org.fcrepo, DEBUG for the module at hand, and WARN for everything else.