Remove parameters.yml and related files

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

@@ -17,7 +17,7 @@ Installation: How did you install wallabag? Using git clone, the docker image, a
 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)
+Parameters:   Put the content of your environment variables (hide sensitive stuff if you want)
 -->
 ### Environment
 
@@ -29,10 +29,37 @@ Parameters:   Paste the content of your app/config/parameters.yml (hide sensitiv
 * **Parameters**:
 
 <details>
-  <summary>My <code>app/config/parameters.yml</code> is:</summary>
+  <summary>My environment variables are:</summary>
 
   ```
-  PASTE HERE
+  LOCALE=
+
+  # Make sure to hide username and password below, if any
+  DATABASE_URL=
+  DATABASE_TABLE_PREFIX=
+
+  FOSUSER_REGISTRATION=
+  FOSUSER_CONFIRMATION=
+
+  FOS_OAUTH_SERVER_ACCESS_TOKEN_LIFETIME=
+  FOS_OAUTH_SERVER_REFRESH_TOKEN_LIFETIME=
+  TWOFACTOR_SENDER=
+
+  # Make sure to hide username and password below, if any
+  MAILER_DSN=
+  FROM_EMAIL=
+
+  RABBITMQ_HOST=
+  RABBITMQ_PORT=
+
+  REDIS_SCHEME=
+  REDIS_HOST=
+  REDIS_PORT=
+  REDIS_PATH=
+  RABBITMQ_PREFETCH_COUNT=
+
+  # Make sure to hide username and password below, if any
+  SENTRY_DSN=
   ```
 </details>