ConfigFileUtil: turn all spring bean methods into not statical methods.
follow up to #8189
1. turn all spring bean methods into not statically methods.
2. better naming for
CdmUtils.getFolderSeperator differentiates if the code runs from a jar bundle or if it runs from commandline. In the later case the first case you always need "/" as separator while in the later case it is OS dependendend and therefore the test fails.
Distinguishing this is e.g. important when term loading from csv files to distinguish the position of the csv files in the file system. If compiled to a jar you need another folder separator then reading from the ordinary folder on Windows because on Windows File.separator <> "/".
But I agree that we should maybe rename CdmUtils.getFolderSeperator to make clear that it is only for this specific usecase and it is not a general shortcut to replace File.separator
fix #8505 turning statical methods of ConfigFileUtil into non statical bean methods
ref #8505 renaming method to getResourceFolderSeperator() and adapting documentation