fixed bug where delete_reports would try to close an alert before that alert pops up
fixed colons in survey titles issue that prevented download_reports from working properly (on windows)
fixed pagination issues in generate_reports; also added a few time.sleeps to fix various race conditions with the in-browser js; also added ability for survey_scripts to be used with images enabled.
updated survey_stats.py to take the path to the directory to look in as a command line argument