Homework submissoin

I have added most of my homework.
Missing items are the below: for the following reasons:

rental app - Will get back to this
happy tails - I want to finish the last section (assigning a pet to an owner) then I will upload it
MTA on Sinatra - i need to fix a small issue where the station hash symbol needs to be given in the correct format the the ruby code
Memetube 2 - Currently uploaded. But will be reuploaded once column CSS is fixed