[WiP] Ssf devel
- Event Display modified to display shower start hits in specific layer, input via steering variable
- Event Display set back to initial commit, ShowerStartFinding Processor implemented (Marinas Shower Start Function), which writes ShowerStart to Event Variables
- Removed shower start print out from processor for each event
- Shower Start Layer implemented in Event Display
- Switch for ST Layer added to event display
- Adapted color box of st layer to proper size
- First hardcoded version of MC true shower start finder, writing MC_st as variable to EventVariables Collection
Sorry for the 7 commits! Its a bit messy..