Renamed unit tests consistently and suppressed unnecessary warnings
LineListParser retrieves also list of lines for which timetable has changed
Extended testing framework to parse timetables from specified location
Refactored and added new tests for LinesListParser
Introduced new Line entity to handle all line's data (number and type for now)
Changed order of parameters in LineType constructor and added null check
LinesListParser retrieves information about line types
Replaced LineNumber in parsers and providers with Line
LineNumberResolver handles also 8x and 8xx special lines