PEP8
[#9] Reorder updated datasets on home page.

Uses modified_date if supplied, and CKAN's
metadata_modified field if not.
[#9] Change recently updated 'view all datasets' link to sort by modified_date
[#9] Make sure all ecportal plugins are loaded in test-core.ini
[#9] Small test cleanup (PEP8 and refactor search data)
[#9] Add test for sorting by modified_date
Bug fix: try to encode rdf as utf-8 before parsing
[#9] Move metadata_modified code out of MultilingualDataset.before_index and into ECPortalPlugin.before_index, as is not related to multilingual code.
[#10] Show 'mimetype_inner' as format on resource page (if available)
[#11] First set of tweaks to the dataset templates for new design
[#11] Moved contact information down the page
change how catalog record is made
[#12] Make sure vocabs can be updated from JSON files.

Allow JSON file path to be specified on command
line.

Some other small code clean up.
[#12] Remove 'import-publishers' command as 'update-publishers'
performs the same task.
[#12] Remove 'import-data' command as no longer used.
[#12] Allow path to publisher file to be specified for 'update-publishers' command.

Do not call 'update-publishers' during 'create-all-vocabs' command.
[#12] Remove 'export-datasets' command as is now in CKAN core
[#12] Change 'create-*' vocab commands to 'update-*'.
[#12] Update README
[#11] Removed 'home' tab from main nav as per mockups