Pretty up display of filenames in linkedtext
Bug fix mishandling of N/A scores
Bug fix mishandling of group assessments on LTI grade total calculation
Change LTI callback error to silent fail
Add php max upload filesize directive to .htaccess for cases where it can't be set using iniset
Merge branch 'master' of github.com:drlippman/IMathAS

Conflicts:
	includes/ltioutcomes.php