Added YARD docs for all controllers
Updated DummyBackend fixtures

Old `os_tpl` fixtures had invalid terms, an OCCI term must always
start with a lowercase alphabetical character.
Added missing Backend model spec

Testing a minor version mismatch between the Backend model and
the loaded backend class.
Forcing strict parser behavior in rOCCI-core

Improving security by disabling rOCCI-core's compatibility mode.
Terms will be strictly validated.
Fixed smoketest script, added missing options

Added missing options for `os_tpl`, `resource_tpl` and VOMS-compat.
X.509 mode.
Added last batch of missing docs in `/app/`
Cleaned up the smoketest script

Removed unused parts, added basic docu comments (YARD).
Removed a runaway new line
Minor version bump to 1.0.0.beta.6

Changes:
* Added documentation for controllers
* Simplified DummyBackend
* Added a bunch of specs
* Added an initializer forcing rOCCI-core into a strict parsing mode