Enhancement and config

.github/ISSUE_TEMPLATE/2-bug-report.md

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+---
+name: Bug report
+about: Create a report to help us improve
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+<!--
+Thank you for reporting an issue.
+
+Please fill in as much of the template below as you're able.
+
+Version:      if you know it, otherwise use the git revision
+Installation: How did you install wallabag? Using git clone, the docker image, an installer, downloading the package, etc.
+PHP version:  The version of PHP you are using
+OS:           The host running wallabag
+Database:     The storage system your instance is using (SQLite, MySQL/MariaDB or PostgreSQL) with the version
+Parameters:   Paste the content of your app/config/parameters.yml (hide sensitive stuff if you want)
+-->
+### Environment
+
+* **Version**:
+* **Installation**:
+* **PHP version**:
+* **OS**:
+* **Database**:
+* **Parameters**: <details>
+  <summary>Your `app/config/parameters.yml` below</summary>
+  PASTE HERE
+</details>
+
+### What steps will reproduce the bug?
+
+<!--
+Enter details about your bug and how to reproduce it
+-->