Xcom 2012 rules of research.
advanced options strings
checking brackets
just one space
typo
updated Polish.lng
Avoid conflict scr/Engine/Options.cpp
Merge branch 'master' into xcom_2012_research
comatibility with "Cancel Project"
changed the description of the option
updated Polish.lng
Merge pull request #549 from redv/xcom_2012_research

Feature: XCom 2012 research rules