Some extra safety for possible multipart getPickBlock exceptions
Cleaned up Waila tooltip
 * Removed block extender connection types because they take up too much room
 * Condensed the information as much as possible (only show relevant information)
 * Removed IFilteringInventory tooltip because that information only gets sent to the client once the client opens the IFilteringMember's filter GUI. With the current implementation, it's very easy for the Waila tooltip to give false information
  + If we want to show GUI information in a Waila tooltip, we'll need to make sure that the information is either always synced to the client or is synced whenever the Waila tooltip is drawn
Fixed some Wireless Block Extender bugs
 * Fixed linked non-TileEntity blocks showing up as <NONE> in certain instances
 * Fixed link info not being synced to clients
 * Fixed new links not rechecking connections
 * Added support for clearing the link of a Wireless Block Extender using an unlinked linker
Merge pull request #39 from squeek502/master

Cleaned up Waila tooltip + some bug fixes