SECTION 1. General equity jurisdiction; original and concurrent

The supreme judicial and superior courts shall have original and concurrent jurisdiction of all cases and matters of equity cognizable under the general principles of equity jurisprudence and, with reference thereto, shall be courts of general equity jurisdiction, except that the superior court shall have exclusive original jurisdiction of all actions in which injunctive relief is sought in any matter involving or growing out of a labor dispute as defined in section twenty C of chapter one hundred and forty-nine.