Sepiida

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Add sepiida.fixtures.permission.created which automatically captures requests to create permissions and stores them for assertions during tests.
*This may be dangerous because it automatically registers a URI with HTTPretty when you use the permission fixture*
You'll need to make sure your tests work after this upgrade if you have been using the permission fixture

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Add sepiida.routing.uri function for creating URI's out of uuids without using `flask.url_for`
Create a way to manage permissions via sepiida.permissions with elevated privileges. This is useful for creating new permissions. Just include 'privileged=True'. Defaults to False

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*API change*
If you were calling sepiida.config.get(...) you need to now call sepiida.config.load(...). Same arguments, new name. config.get() is now a way to load the global config file. On top of that we now auto-use the configuration fixture for easier test writing

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Update version of HTTPretty, slightly better exception handling of permissions module and update mothermayi version

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Lots of changes in this one
- Removed all database functions, including DB Engine, queryadapter and db-related fixtures. Use chryso
- Renamed config fixture to configuration to avoid collision with pytest-flask
- Made sentry support not require a flask context to set up