implimented isStackValidForSlot to return true if valid to allow for automation inserst (mainly Applied Energistics)

Signed-off-by: Andrew Meehan <andrew@meehan.me.uk>
uodated tilehopper to return true rather than attempting to scan the inventory attached
Merge pull request #834 from Pharabus/master

Made AutoWorkBench and hopper accept all items
Merge remote-tracking branch 'upstream/master'