catching connection closed exceptions on blacklist function
clarified pydoc on new constants and fixed misspellings
Setting max upload size to 1GB
fixed a syntax error where host was not defined
reestablishing connection we see zookeeper errors, and logging when we do so
Merge pull request #482 from briandrawert/set-max-upload-to-1GB

Setting max app upload size to 1GB
Merge pull request #480 from shatterednirvana/nit-fix

clarified pydoc on new constants and fixed misspellings
Merge pull request #478 from shatterednirvana/zktransaction-connection-catching

catching connection closed exceptions on blacklist function