Integrate new icons

Thanks, as always, to the precious contribution to @rchiileea for the creation of the required icons!

Icon	Name
	chicken-coup
	panel-door-locked
	panel-front-door-locked
	panel-glass-door-locked
	panel-glass-door-2-locked
	panel-glass-door-3-locked
	panel-glass-door-2-locked
	panel-glass-side-door-locked
	frigate

• thank you to @CeeWeasel #218 for the request
• thank you to @ChillZwix #220 for the request
• thank you to @Tillsy #222 for the request