added modal for selecting bibliography file
choosing a file -> alert it's contents
bibtex implementation done all in javascript, allows to load a bib file on client side
change bibtex links
changed html format
reorganized bibtex stuff
added link to download default bibtex file
citation buttons grouped
moved bibtex input textarea
enabled onverter button
some more code highlighting themes from http://jmblog.github.com/color-themes-for-google-code-prettify/
Merge branch 'bibfile'

Conflicts:
	server.py
	templates/index.html