Saga 0.1.2 Update

This update contains the rest of the Construction implementation, highlighted by a filter.  This added functionality is important since the amount of buildable items is bound to grow tremendously. Also added some items that give light in anticipation of the next update bloc. 

• Filterable categories added to building tab
• Lowered camera speed
• Added campfire, and lamppost to game
• Modified arbory spawn density

This should be the end of the 0.1 bloc. It was small but I needed to get into the hang of developing like this and blogging the process. See you next update. The fun begins ;)