Applied (most) coding style suggestions from Moodle.

	modified:   admin.php
	modified:   block_coursefeedback.php
	modified:   db/access.php
	modified:   db/install.php
	modified:   db/uninstall.php
	modified:   evaluate.php
	new file:   exportlib.php
	modified:   forms/coursefeedback_admin_forms.php
	modified:   forms/coursefeedback_evaluate_form.php
	modified:   forms/coursefeedbackform.php
	modified:   lang/de/block_coursefeedback.php
	modified:   lang/en/block_coursefeedback.php
	modified:   lang/fr/block_coursefeedback.php
	new file:   lib.php
	deleted:    lib/block_cfg.inc.php
	deleted:    lib/exportlib.php
	deleted:    lib/lib.php
	modified:   settings.php
	modified:   version.php
	modified:   view.php
Removed intend and added introductional comment on all files

	modified:   admin.php
	modified:   block_coursefeedback.php
	modified:   db/access.php
	modified:   db/install.php
	modified:   db/uninstall.php
	modified:   evaluate.php
	modified:   exportlib.php
	modified:   forms/coursefeedback_admin_forms.php
	modified:   forms/coursefeedback_evaluate_form.php
	modified:   forms/coursefeedbackform.php
	modified:   lib.php
	modified:   settings.php
	modified:   version.php
	modified:   view.php
New function, fixed layout & bugs

"Make it sticky" is now an option in the settings menu.

	modified:   admin.php
	modified:   lang/de/block_coursefeedback.php
	modified:   lang/en/block_coursefeedback.php
	modified:   lang/fr/block_coursefeedback.php
	modified:   lib.php
	modified:   settings.php