Adds pagination to Search class

Results can be paginated, and also correctly counts results.
Improved search results pagination
WDPA Release now returns both normal and standardised geometry tables

This accounts for the fact that some parts of the importer (namely, all
of them) require access to the import tables once they have been
renamed. It remains easier to rename the tabels and pass through the
standardised names first, rather than the other way around.
WDPA Release creates the import view on download
Ansible installs zip on servers

Not bundled with ubuntu by default
Adds placeholder text for search box

Hopefully more usable now :-)
Fixes location of logo in header
Update base layer to mapbox
Add spacing to bottom of PA page
Corrects vertical alignment for navigation search bar
Navigation bar search works

General improvements to css, as well.
Corrects vertical align for homepage title
Improves readability of WDPA geometry table standardisation
Merge pull request #23 from unepwcmc/fix-importer

WDPA Release now returns both normal and standardised geometry tables
Merge branch 'master' into layout-fixes

* master:
  Improves readability of WDPA geometry table standardisation
  Ansible installs zip on servers
  WDPA Release creates the import view on download
  WDPA Release now returns both normal and standardised geometry tables
Fixes width of images for PA explore on home

Allows for use of retina images
Fixes CSS to use correct background image
Logo now links to home page
Fixes map styles previously shared between home and show pages
Merge pull request #24 from unepwcmc/layout-fixes

Small alignment fixes for CSS + working navbar search