[MCHECKSTYLE-312] Custom Checks are not shown at Rules sections

**[Roman Ivanov](https://issues.apache.org/jira/secure/ViewProfile.jspa?name=romani)** opened **[MCHECKSTYLE-312](https://issues.apache.org/jira/browse/MCHECKSTYLE-312?redirect=false)** and commented

Report example - http://vladlis.github.io/reports/static_check/orekit_before/
If link does not exists, see attached image.

Problem: Custom checks are not show in Rules section, that make it hard to understand how Check was configured to report that amount of violations.

Expected: Rules section should contain all checks that are used in config and there options(parameters).

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**Affects:** 2.16

**Attachments:**
- [Screenshot-empty-Rules-for-custom-Checks.png](https://issues.apache.org/jira/secure/attachment/12765006/Screenshot-empty-Rules-for-custom-Checks.png) (_75.58 kB_)

Start by examining the linked report example and the attached screenshot to understand how the Rules section currently represents configured checks. Trace how custom checks and their options are collected for report generation, then verify that the Rules section includes every configured custom check and its parameters.

Written by the indexing model from the issue text.