changes in the main part complete
newly rendered pdfs: pdfs/main_2013-06-26_03-04.pdf pdfs/diff_2013-06-26_03-04.pdf
spelling
captions
newly rendered pdfs: pdfs/main_2013-06-26_03-11.pdf pdfs/diff_2013-06-26_03-11.pdf
removed todos, updated abstract
newly rendered pdfs: pdfs/main_2013-06-26_03-46.pdf pdfs/diff_2013-06-26_03-46.pdf