improved style of slightly on parts list and changed part drop a bit
added directives.js
moved all directives into directives.js
moved all directives here and also switched addPartId() and stylePart() from controller functions to directives
switched addPartId() and stylePart() from controller functions to directives. Also, improved support for multi-part parts and added different border colors for each group of parts
added zoomed in portion of the Table Tilt Scale
removed the white backround and made it transparent
improved multi-part parts by grouping them in <div>s. Updated accordingly to new/converted directives
added picture of the back of the bandsaw
copied home_page.png to front.png