Create my-progress-completely-disappeared.md

I'm not sure if I am linking them to the correct place at the end.

Closes #91

Also not sure if it would be worth adding this paragraph between the two current ones:

Also you may not be seeing your previous progress because you are on a similar but different track to the one you had started going through; [this](http://help.codecademy.com/customer/portal/articles/1403544-what-s-the-difference-between-the-web-fundamentals-track-and-the-web-fundamentals-original-track-) article explains the differences between some of the tracks. To see the tracks you have started to progress through click 'view profile' from the drop down menu under your avatar in the top right corner of Codecademy pages and all the tracks you are currently doing will be displayed there..