adding @PreAuthorize tags and security:authorize tags for managing Defect Trackers & Remote Providers
Merge branch '2.1final' of github.com:denimgroup/threadfix into 2.1final

Conflicts:
	threadfix-main/src/main/webapp/common/header.jsp
removing @PreAuthorize tag off delete scans method to account for users with app-specific permissions'
Merge commit 'fa1e4071313c8b682064a67f203b60d5a353dae5' into HEAD