front page layout changes
changes to landging page, welcome controller
changed nav li colours
added user name to navbar, and edit profile/password link
before_destroy validations for employees and tools, cannot be destroyed if associated with issuance or line items.
added validations to employee/tools if associated to issuance cannot be deleted.  Added font-awesome and changed flash messages
git pull changes to schema that were added after migration
fixed routes for subdomain to access site with www
added validation for unique barcodes
added welcome routes
added beta user signup form, routes
dropped beta_users table
fixed conflicts
removed create account and changed it to beta access
changed apartment.rb, uncomment apartment/elevators/generic to ensure that www works
minor change to beta button