 Huntingdon Valley Bank continued its push into the city by filing to open a retail branch in South Philadelphia. It also is seeking to relocate its headquarters from Huntingdon Valley to Doylestown. The 352 million-asset bank applied to open a location at 2444 S. Broad St., one of 25 branches that WSFS Bank closed after its 1.2 billion acquisition of Beneficial Bancorp last year. 