fixes to shareHash, and moved into core rather than the app
Merge pull request #35 from guardianproject/harlo_bug_2746

Harlo bug 2746
context not needed
Merge pull request #36 from guardianproject/harlo_bug_2746

context not needed
better fix for public hash
Merge pull request #37 from guardianproject/harlo_bug_2746

better fix for public hash
fix for incorrect jar path (use project instead)
new ffmpeg hash command for jpgs
Merge pull request #38 from n8fr8/master

fixes for jpeg hashing
Merge remote-tracking branch 'upstream/master' into mikael_glsp_tweaks