Address PR nits and feedback
Address PR nits and feedback

* Adjust docstring spacing
* Utilize fullpaths for directory / file variables
* Switch exec --> execfile for the activate script
* Utilize yaml.safe_load instead of yaml.load for securiteh

heartsucker/securedrop,conorsch/securedrop,micahflee/securedrop,conorsch/securedrop,micahflee/securedrop,ageis/securedrop,micahflee/securedrop,garrettr/securedrop,ehartsuyker/securedrop,garrettr/securedrop,heartsucker/securedrop,conorsch/securedrop,heartsucker/securedrop,conorsch/securedrop,ageis/securedrop,ehartsuyker/securedrop,ageis/securedrop,conorsch/securedrop,ageis/securedrop,garrettr/securedrop,heartsucker/securedrop,ehartsuyker/securedrop,micahflee/securedrop,heartsucker/securedrop,garrettr/securedrop,ehartsuyker/securedrop,ehartsuyker/securedrop,ehartsuyker/securedrop