There’s a new synagogue on the scene in San Francisco. It doesn’t have a name yet, but it can trace its roots to 1860 and it owns two buildings. In November, 90 percent of the members at Congregation Beth Israel Judea and Congregation B’nai Emunah voted in favor of merging their two communities. The plan had been in the works for some time, and the two synagogues have even run a joint religious school since 2012. Leaders of both congregations say it will lead to greater financial stability, more vibrant events and a more secure future for Jewish life in the southwestern part of San Francisco.