rbenv: removed existing '.rbenv-version' file and migrated local version specification to '.ruby-version' file
Merge branch 'develop' into feature/rbenv_newformat

* develop:
  updates CHANGELOG and minor changes
  refactors user management
  refactors authorization into before filter
  renames user_presenter to login_presenter
  add authentication! method to concerns, make available user crm_contact as well as crm_attributes
updates ruby version to 1.9.3-p327
Merge pull request #6 from infopark/feature/rbenv_newformat

rbenv: removed existing '.rbenv-version' file and migrated local version...