Allow session-to-session copy - refs BT#8986
Add configuration variable - refs BT#8986
Fix copy only sessions items - refs BT#8986
List same course only - refs BT#8986
Fix confusing message - refs BT#8986
Minor - format code - refs BT#8986
Minor - Code conventions - refs BT#8986
Fix full copy - refs BT#8986
Improve selected items copy - refs BT#8986
Session list with the same origin course - refs BT#8986
Merge branch '1.9.x' of https://github.com/chamilo/chamilo-lms into 8986

Conflicts:
	main/install/configuration.dist.php
Fix session-to-session copy of surveys - refs BT#8986
Minor - Fix PHPDoc - refs BT#8986
Build and restore course respect base content or session content - refs BT#8986
Improve copy form - refs BT#8986
Merge pull request #418 from AngelFQC/8986

Allow session-to-session copy - refs BT#8986