Changed inactive alert behaviour

There is now a dismiss button for mobile. Refreshing the page will
still cause the alert to appear. Also changed some text on the welcome
screen.
Fixed no valid account dialog

Now, if a user tries to register with an unrecognized Facebook account,
they will be presented with an option to register as either a customer
or a vendor directly from the error modal.
Added customer list to manage page

Also made manage page responsive.
Fixed the dead link in the navigation bars
Fixed nav bar responsiveness for mobile screen size 320px
Fixed the vendor profile picture and header responsiveness issues
Hid markets that are closed for the season

When a vendor tries to join a market location, they will now only be
able to choose from a list of markets that are actually open.
Fixed responsiveness issues on the sellers page.  It should now work on all size mobile sites
Merge branch 'mobile-ui-fixes' of https://github.com/rpanjwani/beLocal into mobile-ui-fixes
Changed no valid account modal

The vertically stacked buttons looked strange, so I changed them to
inline buttons instead.
Fixed the responsiveness for the vendor picture on the customer end of the application
Added a pattern background image

This has been commented out until we can get more feedback on it
tomorrow.
fixed header responsiveness issues on the markets / vendors details pages
Merge branch 'mobile-ui-fixes' of https://github.com/rpanjwani/beLocal into mobile-ui-fixes
Added product dropdown for xs displays
Fixed navbar on iPad
Merge pull request #56 from rpanjwani/mobile-ui-fixes

Mobile ui fixes