(#72) - more helpful error message for ddoc view
(#101) - increase test timeouts

These tests are slow in Safari, and I'm tired of
re-running them.
(#103) - use same md5 function as PouchDB
(#113) - travis
(#58) - proper behavior for _sum

The built-in _sum function should return
an error if the values are not numbers or
number arrays.  Also, it should support number
arrays.