Added tests for Limited Attempt Problems and Showing the Answer
Sped up some Lettuce Tests
Sped up tab lettuce test
Accidently left in a set_trace and forgot to include files
Removed the save_html line
Fixed pull request comments and refactored the duplicate code
Potentially fixed all flakey tests

New function was added: is_css_not_present
This function works like is_css_present in that it will wait and can take in an optional argument to wait longer.  This should be used everywhere INSTEAD of not is_css_present as in the latter case, you are telling selenium to wait for the thing you don't want to be there to either be there or time out.
Fixed issue of searching for text

Now the step calls is_text_present and is_text_not_present with a wait time of 5 seconds so that the page can be properly refreshed/reloaded if needed.
This also gets rid of an assert not
Merge branch 'master' into jonahstanley/add-more-tests
Merged from Master
Fixed typo

I accidently had show_answer instead of showanswer.  This error was hidden by a previous default of showanswer=always.
Fixed scenario wording
Merge pull request #10 from edx/jonahstanley/add-more-tests

Jonahstanley/add more tests