Accept is working in Select and Project

added 'display_name' in each relation: used in the relation display. fixed the
weird active highlighting thing in the relation display. renamed all
'comparison' to 'condition', more unified now. re-worded each action statement,
they all begin with their prospective action now. moved some helper functions
to the beginning of the file. added vim fold markers ( {{{ }}} ), mostly for my
own convenience.