Use indexes to fetch keys.
Fix wrong iv test to account for new form of iv.
allow absolute paths to config.load
change docstring comments to use sphinx style
Merge remote-tracking branch 'kali/bug/allow-absolute-paths2' into develop
Merge remote-tracking branch 'drebs/feature/2341-use-indexes-to-store-and-fetch-keys' into develop

Conflicts:
	src/leap/common/keymanager/keys.py