[added] framework to configure and change merchant signs on buildings
[added] merchant signs to tatooine houses
[added] merchant signs to generic houses

Change-Id: I755b45c4c13b53dbd369bdf9fb9461861ccdda5d
[added] merchant signs to guild halls
[added] merchant signs to merchant tents

Change-Id: I7ff485bbc054137eb995a4cbf50d28caa25014e5
Merge "[added] framework to configure and change merchant signs on buildings [added] merchant signs to tatooine houses [added] merchant signs to generic houses" into unstable
Merge "[added] merchant signs to guild halls [added] merchant signs to merchant tents" into unstable