Public Employee Collective Bargaining; Requiring employee organizations or public employees seeking to certify, recertify, or decertify a bargaining agent to file a petition with the Public Employees Relations Commission; authorizing registered employee organizations desiring placement on the ballot in a certification or recertification election to be permitted with a showing of interest from a certain percentage of public employees in the proposed or existing bargaining unit; providing that the showing of interest is confidential and exempt from public disclosure; repealing a provision relating to revocation of certification of employee organizations, etc.