fixed WP bug on program with manual corrections
tentative generalization of the bug correction on generic website
cherry-picked bootstrap formating of program from jds 2014

Conflicts:

	prog/details.php
	prog/showabstract.php
changed name of program display into 'index.php' to avoid unecessary name specification
fixed problem for loading config files
corrected a typo in registration form
program: corrected misplaced includes
fixed a bug in program (relative URL)
moved the registration form (and corresponding tools) outside wordpress

	major modification in the files' organization
improved the registration form by adding an English version and correcting a few HTML bugs
removed wp script for participant list extraction