add a tool for testing: creating custom random ideal generators
 removed one execute usage and replaced getVarIdx with rvar
replaced def with explicit types
Merge branch 'spielwiese' into add.randomideal.tool
added polyGeneratorFromParams()
added support for minimal degree of random ideals
Merge branch 'spielwiese' into add.randomideal.tool
renamed init_randomIdeal to mod_init (mod_init()  is executed during lib loading)
Merge branch 'add.randomideal.tool' of https://github.com/surface-smoothers/Sources into add.randomideal.tool
bugfix
prepared debug output
merged with add.randomideal.tool
bugfixes