replacing puts through logger
Merge remote-tracking branch 'origin/249-display_symbols_as_dag' into staging
Avoid usage of top level exception class.
Cleaned up Subprocess class
Moved import_ontologies from Hets to Ontologies.

Follow the separation of concerns principle.
Rake task "import:hets:lib" fixed.

Return in a rake task leads to a "unexpected return".
Proxy method for library_path removed.
fix file history pagination
Capistrano updated
Gems updated
Merge branch 'staging' into develop