Modular approach to product searches
Merge remote-tracking branch 'origin/akt-modular-search' into akt-master

Conflicts:
	pos/is4c-nf/lib/AutoLoader.php
New POS Module API documentation section
Custom module doesn't require restrictions based on "store" setting
Move tender report documentation into API section
Merge branch 'akt-doc' into akt-master
Kicker module with sign in/out methods
Need signature slip on refund even with signature threshold
Documentation for Kicker API module
Merge branch 'akt-doc' into akt-master