Adds transitions to module hovers.
Adds toggleable nav to other templates.
IE6 fixes for main nav, footer, and transparent PNGs in IMG tags.
Adds checks so incompatible JS won't load in old IEs.
Removes respond.js from IE6, compensates for resulting broken styles.
More IE6 fixes for other templates.
Moves hero labels to top, as IE6 won't show them at bottom.
Move header JS around
Add collapsable navbar
Add ie6 styling
Tidy up JS
Smooth out colour changes on the blocks' hovers
Merge pull request #153 from theodi/feature-nav-updates

Feature nav updates