clarified component setup: exclude jar from active component, but use sources from template within ISABELLE_HOME (relevant for "isabelle scala_project -L");
#built-in components
src/Tools/jEdit
src/Tools/GraphBrowser
src/Tools/Graphview
src/Tools/Setup
src/Tools/VSCode
src/HOL/Mutabelle
src/HOL/Library/Sum_of_Squares
src/HOL/SPARK
src/HOL/Tools
src/HOL/TPTP