Refs #3089, rewrote visitor profile html to organize data as rows w/ columns instead of columns w/ rows, removed unneeded map JPG, modified visitor profile LESS files to use constants for width/height, and removed footer of embedded user country map in visitor profile.
Refs #3089, allow more than 4 custom variables to show in visitor profile via expanding div.
Refs #3089, add initial code for visit header clicking behavior.