refactor(client:login): rename error from 'other' to 'login'

it makes more sense..

Author: Awk34

Diff for: templates/app/client/app/account(auth)/login/login(html).html

@@ -28,7 +28,7 @@ <h1>Login</h1>
              Please enter a valid email.
           </p>
 
-          <p class="help-block">{{ vm.errors.other }}</p>
+          <p class="help-block">{{ vm.errors.login }}</p>
         </div>
 
         <div>

Diff for: templates/app/client/app/account(auth)/login/login(jade).jade

@@ -27,7 +27,7 @@
         .form-group.has-error
           p.help-block(ng-show='form.email.$error.required && form.password.$error.required && vm.submitted')
             | Please enter your email and password.
-          p.help-block {{ vm.errors.other }}
+          p.help-block {{ vm.errors.login }}
 
         div
           button.btn.btn-inverse.btn-lg.btn-login(type='submit')

Diff for: templates/app/client/app/account(auth)/login/login.controller.js

@@ -25,7 +25,7 @@ export default class LoginController {
         <% if (filters.ngroute) { %>this.$location.path('/');<% } %><% if (filters.uirouter) { %>this.$state.go('main');<% } %>
       })
       .catch(err => {
-        this.errors.other = err.message;
+        this.errors.login = err.message;
       });
     }
   }