Move related links onto their own page

Closes #4
Update Damien's title
Remove the 'Search' title from the front page

It was a little bit confusing
Add text content to about page
rename filters.py to template_extensions.py

It contains both filters and new globals for the templates
Add collaborators to the contact us page
Enhance qld import script to be able to capture extra information
by screen scraping a downloaded dump of the online database.
Add FAIMS and UQ logos to about page