Removed old metadata views, fixed vertical tab bar space.
use database_cleaner for db-truncation on seed

Also add sensiblity for VERBOSE_SEEDS environment variable.
If the value is 1 the SQL-Statement output is sent to
stdout instead of log/{environment}.log.
Removed superfluous comment.
Merge pull request #496 from ontohub/correcting458_file_upload

Correcting file upload bug #458.
add db:migrate:clean task; migrate when server runs.
Merge pull request #512 from ontohub/fix_metadata_navigation

Fixed metadata navigation. Fixes (at least) #478.
fix equality error.
Merge pull request #513 from ontohub/fast_database_interaction

Fast database interaction.
adjust to new hets version
Merge branch 'staging' into 505-enforce_metadata_input_at_web_upload

Conflicts:
	app/controllers/files_controller.rb
Merge branch 'staging' of github.com:ontohub/ontohub into staging
Adjust to new hets version.
Merge pull request #515 from ontohub/streamline_ontology_edit_view

Add category label in ontology edit view.
Adjust the number of hets processes by the number of cpu cores.
Merge branch 'staging' of github.com:ontohub/ontohub into staging
Logging of exceptions thrown in the resque block.
Merge branch 'staging' into develop