WEB: add links.txt so that xUnit is properly referenced
WEB: update description of try/catch and add pointer to doctest functionality
CLN+WEB: remove trailing whitespace in .rst files
BLD+BIG+ACK: fixed the search functionality on the website, due to an outdated version of underscore.js on the build machine. Thanks for help by #Yaroslav Halchenko# and #James E. Dobson# to fix this issue