added aws-sdk gem, and fixed main menu appearance to buttons instead of links
added a reference to manifest_id. much better than trying to search by manifest name.
WIP - Manifest#createMatrix is stubbed to read from the manifest file, but doesnt do anything at the moment.
stubs logfile page
fixes bug - if a user is signed in and manifest is loaded, go straight to menu. also, user cannot skip to menu if no manifest loaded, and forces load of manifest.