Initial commit for Events feature.
Removed event demo file.
Added admin category events.
Fixed category id param.

Added review Event triggers.
Updated method positions in profile class to match the standards.

Added event triggers for profiles, download, manufacturer, option
Added more event triggers.
Merge remote-tracking branch 'remotes/OpenCart/Events-feature' into 2.0

Conflicts:
	upload/admin/index.php
	upload/index.php