remove horizontal scroll in token creation dialog

fixes CNVS-17772

test plan:
- go to your user profile page
- generate an access token
- it should be displayed in the dialog, and you shouldn't have to scroll
  horizontally to see the whole thing.

Change-Id: I1b7b1165f2e79e0575b326c974868937758a4b11
Reviewed-on: https://gerrit.instructure.com/46594
Tested-by: Jenkins <jenkins@instructure.com>
Reviewed-by: Benjamin Porter <bporter@instructure.com>
QA-Review: Adam Stone <astone@instructure.com>
Product-Review: Simon Williams <simon@instructure.com>

public/javascripts/profile.js

@@ -266,7 +266,7 @@ define([
     var $dialog = $("#token_details_dialog");
     var url = $(this).attr('rel');
     $dialog.dialog({
-      width: 600
+      width: 700
     });
     var $token = $(this).parents(".access_token");
     $dialog.data('token', $token);