All acts and proceedings relating to the organization, maintenance and operation of a junior college which have been performed before February 16, 1967 by a common school board, by a junior college board or by a city council in a city having over 500,000 inhabitants and which could have been performed in any community college district are hereby validated. Any acts and proceedings which have been initiated or performed by a board governing a junior college in existence before February 16, 1967, shall be deemed to be in accordance with, and in compliance with, the requirements of this Act, as amended.