Scoutsuite

Breaking changes:
- Renamed `Scout.py` to `scout.py`

Changes:
- Refactored the GCP provider to the new architecture
- Added support for the AWS Config service
- Restored AWS resources removed in `5.0.0-beta1
- Added the `--report-name` CLI option
- Tweaked to automatic report naming
- Improved the client-server implementation (see https://github.com/nccgroup/ScoutSuite/wiki/Server)
- Fixed bugs
- Improved the UI/UX

* Python 2.7 and 3.4 have been **deprecated**
* The whole resources fetching architecture was refactored ([see the documentation](https://github.com/nccgroup/ScoutSuite/wiki/(Draft)-Resources-fetching-system-architecture) for more details) and AWS and Azure were migrated to that new architecture
* A new flag was added (`--max-workers`) which allows specifying the exact number of workers (threads) Scout will use. This will replace `--thread-config`, which is less verbose. The new flag can be used with Azure and AWS only as GCP has not yet been refactored.
* Performance was improved
* The logging system was refactored
* A _Resources summary_ page was added (available through the top-right menu)
* UI improvements were made
* Bugs were fixed
* Some (AWS) resources that were not used for findings or surface attack analysis have been removed
* EC2: `customer_gateways`, `vpn_gateways`, `vpn_connections`, `route_tables`, `peering_connections`
* Route53: `hosted_zones`
* SNS: `subscriptions` (already included in topics)
* ELBv2: `ssl_policies`
* ELB: `elb_policies`

- Opinel was removed as a dependency and integrated directly to the codebase.
- A with the menu highlighting was fixed
- Most of the warning were addressed
- Support for AWS was improved
- The default profile name for AWS was changed from `'default'` to `None`. This will have an impact on the report files names.

Please note that python 2.x and 3.4 will soon be deprecated.
To learn more about why we are deprecating those versions of Python, see this thread: 183 .

Fixes a couple of bugs with the Pypi package.

- Azure support has been improved but is still considered alpha
- The `--provider` flag is now optional. If you do still explicitly specify it, it must be the first flag.
- Implemented new findings
- UI fixes and improvements