more detailed display of Hets errors
multi-line hets errors; remove URIs and file names
sovled nil problem
refactoring of failed_ontology_versions
Revert "run sunspot for unit-tests"

This reverts commit e5c919b94277662c4e3a9fd0658251a4e5ca2bbd.
Revert "Use Tims fix for starting sunspot:solr in test environment for now."

This reverts commit 191c03fd5129738f5de1b9a02f17c616a3ff1b90.
Merge pull request #525 from ontohub/520-file_extension_determination

use File.extname to determine extension.
Merge branch 'staging' of github.com:ontohub/ontohub into staging
Merge remote-tracking branch 'remotes/origin/display-ontology-errors' into staging
Merge branch 'staging' into develop

Conflicts:
	app/models/repository.rb
Merge branch 'develop' into develop.ontohub.org