Fixed various Lua errors with the pocket, most when interacting with the pocket when dead.
Fixed #849
Made right click switch between arrest and unarrest stick. Fixes #848
Made menu reload, if open, when adding and removing pocket items.
Fixed an issue where the pocket menu would be invisible (height 0) if it was reloaded with an empty pocket.
Merge pull request #850 from Bo98/pocket-fixes

Pocket fixes