start measuring test coverage with pybuilder
simplify a statement
reduce duplication
reuse the variable source that has just been assigned
move InputReaders to seperate file
remove unused imports
move the ETAG_COMMENT constant to the settings file
implement url differentation
implement reading config from a file
factor out testing variable
better tests for test_read_config_from_file
implement reading config from host
rename tests to something more appropriate
move ETagReaderTests to the InputReader_tests
rename InputReader_tests to reader_tests

Something more generic and also conform to pep8 conventions for module names.
Merge pull request #2 from ImmobilienScout24/refactor/reading_config

Refactor/reading config