Input types for better mobile experience

app/partials/login.html

@@ -9,7 +9,7 @@
 
     <div class="form-group" ng-class="{'has-error': error.field == 'phone'}">
       <label class="control-label" for="phone_number" ng-if="error.field == 'phone'">Incorrect phone number</label>
-      <input type="text" class="form-control" name="phone_number" ng-model="credentials.phone_number" placeholder="Enter your phone" required>
+      <input type="tel" class="form-control" name="phone_number" ng-model="credentials.phone_number" placeholder="Enter your phone" required>
     </div>
     <button class="btn btn-tg btn-block" ng-class="{disabled: progress.enabled}" ng-disabled="progress.enabled" type="submit">
       {{progress.enabled ? 'Generating keys...' : 'Next'}}
@@ -28,7 +28,7 @@
 
     <div class="form-group" ng-class="{'has-error': error.field == 'phone_code'}">
       <label class="control-label" for="phone_code" ng-if="error.field == 'phone_code'">Incorrect SMS code</label>
-      <input type="text" class="form-control" name="phone_code" ng-model="credentials.phone_code" placeholder="Enter your code" required>
+      <input type="number" maxlength="5" class="form-control" name="phone_code" ng-model="credentials.phone_code" placeholder="Enter your code" required>
     </div>
 
     <button class="btn btn-tg btn-block" type="submit" ng-class="{disabled: progress.enabled}" ng-disabled="progress.enabled">