changed python sdk quickstart that closely follows rest api quickstart
removed python markers as the quickstart is about python sdk
minor typo fix
fixed incorrect import path
updated product guide - fixed some typos
Merge branch 'refactored_sdk_docs' of https://github.com/gcetusic/stormpath-docs into gcetusic-refactored_sdk_docs

Conflicts:
	python/quickstart.md