style changes

add border radius mixin and update instances
add button active,focus hover styles and set colour in partials that can
be customised
tweak button

also add ignore for common compiler files
minor tweaks and meta addition

Add meta tags from live site and update template, also tweak form styles
set up grunt, modernizr and require js

set up modernizr and require js for template with grunt configured to
carry out all tasks. new js file architecture and css now minified
update placeholder text
Merge pull request #8 from aaronBeryUcl/master

style changes