Cijoe

Added a naive path-sanitizer, switched to using git to "clean", fixed a style-issue.

Fixed doc generation via read-the-docs

A complete re-implementation and a switch of license.

* Replaced the ``::`` module-separator with ``.`` in hooks and modules.

* Fix to quick-start documentation

* Replaced the ``::`` module-seperator with ``.``

* Removed all examples and provided them in an example package 'cijoe-pkg-example'

* Removed deprecated Bash-module named ``board``

* Removed deprecated reference environment ``refenv-u1604``

* A complete overhaul of the documentation

* ``extractor:fio_json_read``: add 'name' and 'stddev' to metric-context

* ``bin:cij_metric_dump``: tool to collect all metrics and dump them to stdout

* Add tool ``cij_plotter`` capable of producing plots based of metrics extraced from testcases

* Add tools for testcase metric extraction and analysis

* Support for using the Python tools without entering the CIJOE shell

* Support for multiple testplans per test-run
- Arguments to ``cij_runner`` has changed
Use: ``--testplan`` to provide one or more testplans (this replaces positional arg)
Use: ``--env`` to provide invironment file (this replaces positional arg)
- Structure of ``cij_runner`` output has changed
Before: ``<OUTPUT>/testsuite_ident/...``
Now: ``<OUTPUT>/testplan_ident/testsuite_ident/...``
In other words, testsuites and nested beneath testplans in the test-result output.