fixed issue https://github.com/globaleaks/GlobaLeaks/issues/818
fixed issue https://github.com/globaleaks/GlobaLeaks/issues/819
fixed issue https://github.com/globaleaks/GlobaLeaks/issues/819
fixed a bug in streaming sha calculation
fixed issue https://github.com/globaleaks/GlobaLeaks/issues/817
removed debug print
Merge branch 'fix_issue_817'
Merge branch 'fix_issue_818'
fixed issue globaleaks/GlobaLeaks#819
completed unittests related to https://github.com/globaleaks/GlobaLeaks/issues/819
aligned test_gpg to last commit
Merge branch 'fix_issue_819'