added validation for the demographics form
modified validation for the demographics survey
adding client side validation error handling
modified the styling for demographics to enable posting custom error messages next to impacted fields
finished styling for the mental rotation task
negated stimuli colors to work with a darker background, restructured Tower of London images so that they are laid out horizontally for easier task completion, and created new stimuli for the flanker task
updated styles for all the experiments
wrote a script to check if page is accessed without a user ID
made minor modifications to some of the plugins to equalize styling in the prompt and the feedback messages
made modifications to the page structure on all of the pages to support new styling