This not a mod, but rather a configuration files edit, 3 minutes job really.
But if you don't want to do it yourself, feel free to use my files from this thread:
http://steamcommunity.com/groups/3Thron ... 306938829/skill_types.xml has to be installed on BOTH server and client (remember to restart the server) and it will allow you to carry movable objects off the claim, where they can be opened.
It is much better than simply opening them on the spot, as it deters glitchers a bit.