[Review] Request from 'vlewin' @ 'SUSE/connect/review_140414_build_suseconnect_rpm_with_osc'

Please review the following changes:
  * cb2ad39 build SUSEConnect RPM as root
  * b5a74ee make rubocop happy
  * 4bbc97f install SUSEConnect RPM after building it
  * 18ea446 store osc project and arch in defaults
  * c929633 build SUSEConnect RPM with osc
  * 891a472 install system gems
  * 8a4be6e check whether package already installed before install it
  * 89560ed remove zypper services in clean up section
  * 2c78445 set project location in defaults
  * 140e290 add general section to oscrc and SLE_12 to trsuted projects
  * 6b8cb1c Merge pull request #36 from SUSE/review_140407_i18n_support
  * 8be1745 Merge master
  * ff8e6d3 Fix typo
  * 6d9f572 Shorten line to 80chars
  * 76d9352 Fix whitespace
  * c5d0f00 Remove input sanitization test from spec
  * bffccbf Remove redundant \!nil check on assignments
  * 50acb04 Remove pointless input well-formedness check
  * 8f76296 whitespace
  * 41a5b2e whitespace
  * 6a23630 Set language via cli
  * 7664996 Pass Client language to Connection
  * 4d25b82 Store language option
  * 4b8d22e Pass language option as Accept-Language header