ArrayIndexOutOfBoundsException was produced when the user  tried to apply changes in "Setup selectors" right after closing all databases. Now the exception is caught and a message is shown, telling the user that the changes could not be applied.
Update Authors.html

 * authors alphabetically
 * tabs2spaces
Merge branch 'master' of https://github.com/lucianamelo/jabref into lucianamelo-master

Conflicts:
	CHANGELOG
	src/main/resources/help/About.html
Merge branch 'lucianamelo-master'