PLD: format api docs
PLD: helper function for get accessible forms, tighten
PLD: raise expection on expecation failure
PLD: use with remove unused variables
PLD: remove import instance, it is not used
PLD: line breaks and comments
PLD: remove except and raise, should be equivalent
PLD: functions for submission response types
PLD: refactor get_form_url function
PLD: parse int helper function
PLD: move inner function to function
PLD: check existence before parse
Merge pull request #39 from onaio/pld/misc-cleanup

Pld/misc cleanup, this might mess up api doc rendering