Merge pull request #645 from sbesson/rebased/develop/omero5_homebrew_devel

Add --devel option to install the OMERO 5 via Homebrew (rebased onto develop)
merge develop -D org -I include -E exclude: PR 626 (Add new Squash tutorial and screenshots)
merge develop -D org -I include -E exclude: PR 650 (Add Matlab jobs to the continuous integration page)