Shoreline Unified School District’s board of trustees last week voted to hold off on searching for a full-time principal for Tomales Elementary until a new superintendent is hired later this year, a decision that troubled many parents—particularly Latinos—who have advocated strongly in recent months for the district to find a new principal as quickly as possible. At Thursday’s board meeting, trustees considered two plans: one to hire a principal for the start of the 2016-17…