[Gameplay] - Small walls near doors prevent peeking

[LordRusty]

Bug Submission:

Category: Gameplay

Platform: Mac

Issue Title: Small walls near doors prevent peeking

Issue Description: During a mission I had an error where my character was given a tooltip to peek round a door, but upon attempting to peek no vision was gained. This was because the character was hiding behind a wall which separated the character from the door.

The peek button was displayed next to the open/close door button above the door, but the peek that was performed was just for the wall the agent was hiding behind.

Suggest that button should not be displayed above door in this case. (also, probably shouldn't be able to open doors through walls either )

Steps to Reproduce: The setup was as follows, the agent was standing on her tile, facing a thin wall seperating her from the neigbouring tile. There was another wall on the left of this tile. The neighbooring tile was empty, with a door on the side to the agents left.