lint(track_config): check status and online_editor

[ee7]

From the spec:

• The "status.concept_exercises" key is required
• The "status.concept_exercises" value must be a boolean
• The "status.test_runner" key is required
• The "status.test_runner" value must be a boolean
• The "status.representer" key is required
• The "status.representer" value must be a boolean
• The "status.analyzer" key is required
• The "status.analyzer" value must be a boolean
• The "online_editor.indent_style" key is required
• The "online_editor.indent_style" value must be the string space or tab
• The "online_editor.indent_size" key is required
• The "online_editor.indent_size" value must be a positive integer (>= 0)

Diff due to this PR to the current tracks:

dart

Used "online_editor": null, - see here

+Not an object: 'online_editor':
+./config.json
+

research_experiment_1

+Missing key: 'status':
+./config.json
+
+Missing key: 'online_editor':
+./config.json
+

[ErikSchierboom]

LGTM!

research_experiment_1

FYI: you can ignore this repo from your diffs, as it is not really a track repo

[ee7]

research_experiment_1

FYI: you can ignore this repo from your diffs, as it is not really a track repo

Sure - it's just there because I use every repo tagged with exercism_track so that I don't have to update some hardcoded list when we add a new track.

[ee7]

Made a quick fix because the below was ugly, and looked like a float:

The value of `online_editor.indent_size` is `-5`, but it must be an integer >= 0.:
./config.json