calculation flow improvement part 5

--HG--
rename : calculation/src/main/scala/org/encalmo/calculation/SymbolConfigurator.scala => expression/src/main/scala/org/encalmo/expression/SymbolConfigurator.scala
rename : structures/src/main/resources/dictionary/circularSilos_pl.properties => structures/src/main/resources/dictionary/circularSilo_pl.properties
rename : structures/src/main/resources/dictionary/rectangularSilos_pl.properties => structures/src/main/resources/dictionary/rectangularSilo_pl.properties
rename : structures/src/main/resources/dictionary/silos_pl.properties => structures/src/main/resources/dictionary/silo_pl.properties
rename : structures/src/test/scala/org/encalmo/structures/AllStructuresCalculationsUnitTest.scala => structures/src/test/scala/org/encalmo/structures/AllStructuresWorksheetsUnitTest.scala