Merge pull request #83 from jcabi/master

merge to my repo
#726: Explicit instead of default "master" ref when creating content
Merge pull request #85 from jcabi/master

merge to my repo
#744 Repo names for integration testing not random enough
Merge remote-tracking branch 'origin/master' into 726
#726 Fixed PMD error
Merge pull request #777 from carlosmiranda/726

#777: pull request #726: Explicit "master" ref instead of default when creating content
Merge pull request #781 from lthuangiang/issue744

#781: pull request #744 Repo names for integration testing not random enough