Implement research.ini

Notes:
1) Removed research.pReplacedArtefacts

Tests:
1) Start scirmish game, activate cheat "research all"
2) Start alpha campaign game, activate cheat "research all"
3) Start beta campaign game, activate cheat "research all"
4) Start gamma campaign game, activate cheat "research all"
5) Play scirmish game with AIs and research various stuff