make it so if you hit enter in jqUI dialog it submits form

fixes: #10247

test plan:
hit Start A New Course on dashboard
Name the course and hit enter
should do the same as hitting the submit button

Change-Id: I76a45edb723ddc33d1bd0708551e35744b1db0b7
Reviewed-on: https://gerrit.instructure.com/13650
Tested-by: Jenkins <jenkins@instructure.com>
Reviewed-by: Ryan Florence <ryanf@instructure.com>

app/coffeescripts/jquery/fixDialogButtons.coffee

@@ -18,6 +18,11 @@ define [
           if $button.is('.dialog_closer')
             $button.click preventDefault -> $dialog.dialog('close')
 
+          # make it so if you hit enter in the dialog, you submit the form
+          if $button.prop('type') is 'submit' && $button[0].form
+            $dialog.keypress (e) ->
+              $($button[0].form).submit() if e.keyCode is $.ui.keyCode.ENTER
+
           return {
             text: $button.text()
             "data-text-while-loading": $button.data("textWhileLoading")

app/views/shared/_new_course_form.html.erb

@@ -44,8 +44,11 @@
   <input type="hidden" name="enroll_me" value="true">
 
   <div class="button-container">
-    <button type="button" class="button dialog_closer"><%= t 'cancel', "Cancel" %></button>
-    <button class="button btn-primary" type="submit"><%= t 'create_course', 'Create course' %></button>
-
+    <button type="button"
+            data-text-while-loading="<%= t 'cancel', "Cancel" %>"
+            class="button dialog_closer"><%= t 'cancel', "Cancel" %></button>
+    <button class="button btn-primary"
+            data-text-while-loading="<%= t 'creating_course', 'Creating course...' %>"
+            type="submit"><%= t 'create_course', 'Create course' %></button>
   </div>
 <% end %>