Add missing write-in records to San Diego 2016 Primary precinct file

[carbonphyber]

Add write-in records to 2016 Primary San Diego precinct file.

Closes #81

[carbonphyber]

Confirmed this MR fixed this formerly broken unit test:

_ test_data[2016-0607-primary] [2016/counties/20160607__ca__primary__san_diego__precinct.csv] _
tests/test_data.py:45: in test_data
    assert state_cmp.to_dict()['votes'] == county_data.to_dict()[
E   AssertionError: San Diego failed
E   assert {('Alan Spear...t'): 569, ...} == {('Alan Spear...t'): 195, ...}
E     Omitting 116 identical items, use -vv to show
E     Left contains 8 more items:
E     {('Andrew D. Basiago', 'San Diego', '', 'President'): 1,
E      ('Billy Falling', 'San Diego', '', 'U.S. Senate'): 66,
E      ('David P. Thomson', 'San Diego', '', 'President'): 3,
E      ('Ignació León Nuñez', 'San Diego', '', 'President'): 1,
E      ('Joann Breivogel', 'San Diego', '', 'President'): 1,
E      ('John Dowell', 'San Diego', '', 'President'): 2,
E      ('Thomas E Krouse', 'San Diego', 76.0, 'State Assembly'): 376,
E      ('Troy Hugh Southern', 'San Diego', '', 'President'): 1}
E     Use -v to get the full diff