small refactor in models/deployment
destroy --> destroy! to force exception
add test for instance.launch!
API: Show uptimes for deployments
API: Show deployable xml for deployments
fix cost formating in deployment and instance properties
API deployables: XML view for #show
API deployables: implement show
specs: request spec for deployables API #show
routes: add API deployables show
Merge pull request #284 from hacxman/deployables_show-rebase2

Deployables show rebase, take 2
API: Instances index, show, and entrypoint
API: Show full representation of instances in top level collections
Removed use of locals in show action
Merge pull request #290 from rwsu/instances-api

API: Instances index, show, and entrypoint v3
Initial frontend realms api index and show implementation
Frontend realms full representation shown in top level collections
Add frontend realms to api entrypoint
Merge pull request #282 from martinpovolny/cost-format

fix cost formating in deployment and instance properties
Changed cucumber user test

For some reason when running rails 3.2.8 with ruby 1.8 on travis,
validation if password is blank returns only message:
Must be a unique password with at least 4 character and at most 255 characters.

Although the test passes unchanged for ruby 1.9.

(cherry picked from commit 3bebbdd3e98023164d2ede1d96c92851e6724fba)