on loading a file, switch to double sided if there is any evidence of traces, boards, or groundplane on copper1

git-svn-id: http://fritzing.googlecode.com/svn/trunk@6870 85f94c43-f63a-0410-9d22-21439860c375
call requestQuote when board is resized, deleted, or swapped

git-svn-id: http://fritzing.googlecode.com/svn/trunk@6871 85f94c43-f63a-0410-9d22-21439860c375