add Quartz Fluid Pipe (20mb/t)
flow rate multipliers
Merge remote-tracking branch 'upstream/6.1.x' into 6.1.x
ActionValve and ActionParameterDirection
Merge pull request #2011 from RufusStark/6.1.x

Quartz Fluid Pipe and Flow Rate Multiplier
Merge pull request #2014 from AEnterprise/6.1.x

create events for external research
fixed RF battery save / load
fixed icon setting
fixed powered tile detection for engines, following RF migration
re-activated engine pumping, following RF migration
fixed indentation
fixed save / load of input/output states, fix #2011
attempt at moving MJ => RF units, for #2015
fix blueprint not dropping form construction marker
fix construction marker accepting more then 1 blueprint