Laboratory Productivity

Adds laboratory productivity research, falling somewhere between mining productivity and lab speed for requirements and costs.

8 levels of research totaling 30% - so 50% with 2 modules installed in lab. Levels 1-3 require production science (purple) and require Lab speed 4 - adds 2% each Levels 4-6 require high-tech packs and Lab speed 5 - adds 4% each Levels 7-8 require space science and Lab speed 6 - adds 6% each

-- v1.4.0 = updated version for 1.1 -- v1.3.1 = updated version for 0.18 -- v1.2.1 = updated for 0.17, replaced military packs with production packs -- v1.1.1 = adds infinite research for 2% bonus per