ENH: Better read_json error when handling bad keys

(in json data with orient=split)
Merge pull request #4838 from jtratner/better-error-message-with-bad-json-key

ENH: Better read_json error when handling bad keys
BUG: fix sort_index with one col and ascending list

now actually checks the first element of the list
Merge pull request #4846 from jtratner/GH4839_sort_index_ascending_bug

BUG: fix sort_index with one col and ascending list
DOC: v0.13.0 HDFStore corrections
BLD: fix json to build on windows, @Komnomnomnom
TST: dtypes tests fix for 32-bit
Merge pull request #4860 from jreback/dtypes_fix

TST: dtypes tests fix for 32-bit