Add .gitattributes to ensure correct line endings

Ref: https://help.github.com/articles/dealing-with-line-endings
Merge pull request #157 from zanata/gitattributes

Add .gitattributes to ensure correct line endings
update zanata common version
Merge pull request #165 from zanata/update-zanata-common-version

Update zanata common version
rhbz1002340 - verify username availability in first openid log in
Merge pull request #164 from zanata/rhbz1002340-openid-username

rhbz1002340 - verify username availability in first openid log in
Merge remote branch 'origin/master' into seam231