Sprocket Android Post-sale-creation Referral Prompt

Added a referral blocker after creating a Sprocket bicycle/part sale/donation/wanted-ad in order to increase app exposure and perhaps help you sell some other item you have for a free credit.

If you like it, don't hesitate to click "L" 💗 or "F".

Hi-rez before/after specifications used to implement the new screen into the post-sale-creation flow and afterwards as project documentation