DataFile#getCSVReader ignores DataFileEncoding

[kflorian]

In org.n52.sos.importer.feeder.DataFile#getCSVReader, a new FileReader is instantiated, without specifying a charset, causing the system default charset to be used for reading the datafile contents, instead of the charset specified by the DataFileEncoding in the configuration:

	public CsvParser getCSVReader() throws IOException {
		LOG.trace("getCSVReader()");
		final FileReader fr = new FileReader(file);
		final BufferedReader br = new BufferedReader(fr);
                ...