Issue 6760 - Hide filter list title if none passed via subscribe link
This MR for https://gitlab.com/eyeo/adblockplus/adblockplusui/issues/73 contains the following changes:
- Added new options to "addSubscription" mock parameter
- Desktop options page
- Hide title if none passed or same as URL
- Mobile options page
- Hide title if none passed or same as URL
- Removed title error message