Merge pull request #16 from mreid1130/view_survey

reviewed and ok'd
AJAXified delete button
Merge pull request #17 from mreid1130/create_survey.erb

okie dokie
fixed merge conflict
Merge pull request #18 from mreid1130/delete_survey_AJAX

okie dokie
added usernames and gravatar images
Merge pull request #19 from mreid1130/img_usernames

okie dokie
implement session so that you must be logged in to make a survey