Cloudos-cli

- Removes some default fields returned from `cloudos job list` command in preparation for
its deprecation from the CloudOS API. In particular, the following fields were removed:
* `resumeWorkDir`
* `project.user`
* `project.team`

- Remove all cohort browser functionality that will be maintained in a separated
repository.

- Patch: fixes problems with CloudOS environments using the new API specification for
`projects` endpoint while maintaining backwards compatibility.

- Patch: fixes `BarRequestException` and `TimeOutException` messages when the response from
the API server is empty.

- All Cromwell functionality works now with personal API key. The
`--cromwell-token` argument is maintained for backwards compatibility, but can
be completely substituted by `--apikey`.
- Changes `--wdl-importsfile` parameter to be optional even when running a
WDL pipeline as `importsFiles` are not always present in WDL pipelines.
- Fixes some incomplete error messages.

- Modifies default `--cost-limit` from infinite (`-1`) to `30.0`. This will prevent
wasting resources without a purpose of running a pipeline.