Merged memberdb.css into shared.css and deleted the former.

Began massive overhaul of the login page's layout and design.

Began a massive overhaul of the stylesheets in general, with the intent of eventually rolling out a full and polished dark theme

Began a change of naming of CSS classes such that "modifier classes" (to be used in conjunction with other classes) begin with a dash/minus/hyphen, similar to how command line arguments work. Example: class="button -default" modifies this instance of the button class so that it gets extra styling to make it stand out as the default button, eg. right alignment, blue, etc.