#223766 by nancyw - change term indicator selection to radios.
#223761 by nancyw - add clear cache button on settings page.
#220466 by nancyw for harking - corrected filter description pointer.
#48966 by nancyw for Andrés Chandía - added form to enter alphabar contents.
Added empty pic to line up when Taxo Img in use and no pic.
Moved settings to end in prep for 6.x.