[20] Save login data

[JaRutkowski]

As a user, I want to save my login data so that there's no need to type that data all the time.

Consider to user temp file (src\controller\utils\com\javafee\elibrary\core\common\SystemProperties):

	initializeTempProperties();

	private static void initializeTempProperties() {
		File tempFile = new File(System.getProperty("java.io.tmpdir") + "/elibrary.config");
		try {
			tempFile.createNewFile();
			/* ... */
		} catch (IOException e) {
			e.printStackTrace();
		}
	}