Manufacturer searchable datalis

Since we have so many manufacturers listed on MG the manufacturer select box in the module search form was not very easy to operate. Especially on touch devices where you could not enter a letter to shortcut to a manufacturer.

The new system is tricky to use on my workstation with a Wacom tablet (I don't have any any of those "mouse" things). If I start typing a name it brings up a "pop-up" with matching manufacturer names, but that pop-up will disappear before I can click on it - it doesn't work well with absolute pointing devices. I can get around this by only using keyboard input but it's a bit clunky. If this new method helps people on other platforms, then perhaps provide a "mode" switch to allow for both methods.