Version bump to 0.20.6.pre
PDFs for designs which include file variables now generate correctly, fixes #30.
Project names no longer need to be unique, closes #29.
Associated users now works correctly on systems that don't set user status, closes #28.
Simplified sheet header on sheet show page, and removed additional information at bottom, closes #31.
Selecting radio buttons and checkboxes via the keyboard now properly fires a change event to updated dependent calculated fields, fixes #32.
File attaching and removal now work exclusively through the sheet edit page, closes #33.
Removed table borders and 100% widths
Version 0.20.6 finalized