add an error message for voting on items when you're not logged in
add an error message for voting on items when you're not logged in

Zarel/pullup,josegonzalez/pullup,josegonzalez/pullup,josegonzalez/pullup,Zarel/pullup,Zarel/pullup,treygriffith/pullup,treygriffith/pullup,rickhanlonii/pullup,treygriffith/pullup,gitterHQ/pullup,rickhanlonii/pullup,gitterHQ/pullup,larvalabs/pullup,larvalabs/pullup,larvalabs/pullup,rickhanlonii/pullup,gitterHQ/pullup