Simple qiita pet tests

Adds a bunch of simple tests to make sure that pages render. Some pages and functions are not tested because there is no simple way to test them, but this covers almost all of them. 

Already found one issue using the tests and fixed it.
Thanks for putting this together. I think #538 should be merge before
this and the files should have tests for all methods, at least with
pass, so we can add later, perhaps this Tuesday.