SAOT Headers

Caching of the header content and removes dependency on the SAOT server's (except on application start).

css is stored locally on the project
header is loaded on app start and stored in cache
header logo is loaded on app start and stored in cache

not sure if we should consider loading the css on app start as well and storing in cache, so any tweaks by SAOT would result in updated css in the system by just updating the cache.  Not entirely sure how to minify and concat on the fly.