Merge pull request #1298 from thearn/guidev

Guidev
Seems to all be working, and fast
Merge pull request #1299 from Kenneth-T-Moore/cal

Some performance and display fixes for input/output filters in the GUI
Changed redirected links; edited reqs. section in Dev Guide. Made a couple other editorial fixes.
Merge pull request #1300 from pziegfeld/march2013_links

Changed redirected links, edited Dev Guide reqs. section, made other minor fixes.