Asset Directories created, Images moved

image files moved from public/images to assets/images
0.16 Upgrade

Upgraded in line with
https://github.com/mysociety/alaveteli/blob/release/0.16/doc/THEME-ASSET
S-UPGRADE.md
Added Symlink back in
Comment Removed from install.rb
Twitter Image fix
HTML Viewer - Logo Update
Removed Bodies/Requests from main theme
Declare image_tag on footer
Change quote marks to black

copied from https://www.righttoknow.org.au/images/quote-marks.png