moar updates

fix up layout issues with browse page and add alt text to images so as to take care of the 300+ html errors

updated about.erb to take care of html error

updated About NeoCities footer to say About Us to take care of text overlap issue with sticker.

clean up one error on sign in page.  update length of inputs to a 60% col.

dashboard add alt tag to screen shot.  fix some issues with incorrect indenting in the slim file

settings:
update some font sizes for layout purposes