[647] Integrating OGL logo
[647] Link the OGL logo to the underlying licence
[641] Serve resource cache items via a controller action

To be able to add a header and set the base meta field this commit adds a controller action to the data controller for inserting them into the HTML file at runtime.
[#651] Paster commands for exporting/importing package data between CKAN and Google Refine.
[#651] Refactor paster command. Handles general purpose dump & import from DB to Google Refine.
[#651] No more dry-runs. Disable the syncronous_search plugin before execution to make this go faster.
[#651] CSV dump handles unicode. Fix bug which creates theme-secondary={}
[#651] Export publisher and tags for easier Refine-ment
[642] Merge from master