Added test for API mapping feature

Going to enable parameter mapping for API required parameters
(release_version, target, testset, product) so users can use terms that
make sense in their context when uploading reports. See issue #23
Define the mapping as hash
Changed tests a little

The previous test defined the mappings so that they would not work.
Added API parameter mapping

Added possibility to define custom names for API parameters
(release_version, target, testset, product). This enables user
organizations to use parameters that make sense in their context.

Closes #23
Added task for deploying config.yml
Move parameter tweaking code back to import method

Updating and merging fail if the parameter tweaking things are done for
those as well (because the parameters shouldn't exist).
Update Rails

http://weblog.rubyonrails.org/2013/2/11/SEC-ANN-Rails-3-2-12-3-1-11-and-2-3-17-have-been-released/
Merge branch 'dev'