remove unused gems

remove neat, bourbon, and airbrake
install zurb foundation
create root route pages#home
setup basic scss template

create variables for common colours and import layout file.
Revert "setup basic scss template"

This reverts commit 4fed6830be64fff2eda56390a5ddfa010b24e955.
Revert "Revert "setup basic scss template""

This reverts commit 5f920e04279434a0281f72759c2b3f933bd89d37.
create layout css file
create basic topbar partial
reorganize scss file & alter variables