Scoutsuite

Front-end fix

Minor fixes

Changes:
- Added alpha support for Alibaba Cloud (Aliyun) and Oracle Cloud Infrastructure (OCI)
- Improved AWS & Azure support, including new services and findings
- Added the `--exclude-regions` parameter for AWS
- This can be used to exclude optional regions, e.g. by passing `--exclude-regions ap-east-1 me-south-1`.
- Added support for AWS authentication with access keys (https://github.com/nccgroup/ScoutSuite/wiki/Amazon-Web-Services#cli-parameters)
- Added support to handle AWS rate limiting (through exponential backoff) as well as a configurable rate limiting parameter `--max-rate`)
- Improved finding rationales'
- Improved error handling
- Bug fixes

Changes:
- Adds GCP and Azure CIS benchmark rulesets
- Renames AWS CIS ruleset to `cis-1.0.0.json`
- Adds a number of GCP findings
- Improves the implementation of Azure's authentication strategy
- Updates to finding rationales and descriptions for all providers
- Updates to default rulesets for all providers
- Improves the UI
- Bug fixes, improved error handling

Changes:
- Update styling to NCC's standards
- Changes to the CLI
- Removes the `--vpc` and `--resume` CLI arguments as they aren't implemented
- `--resume` will be worked on in https://github.com/nccgroup/ScoutSuite/issues/88
- Adds the following options:
- `--quiet` flag to suppress CLI output
- `--logfile` param to specify an additional file path to store output (supports `--debug` flag)
- Update the "Execution Details" section to be more generic and work with programatic executions.
- Updates to rulesets and findings
- Bug fixes

Changes:
- Numerous bug fixes
- Refer to 5.x beta releases for additional changes in 5.x