Merge branch '6105-update-gitlab-template' into 'develop'

Resolve "Update GitLab template"

Closes #6105

See merge request ispconfig/ispconfig3!1444

Author: Marius Burkard

.gitlab/issue_templates/Bug.md

@@ -1,41 +1,45 @@
-## short description
-What is happening and what is wrong with that?
+<!-- Before creating a bug report, please:
+- Read the contribution guidelines: https://git.ispconfig.org/ispconfig/ispconfig3/-/blob/develop/CONTRIBUTING.md
+- Do not ask support questions here. If you are unsure if your problem is a bug, post a thread on the forum: https://www.howtoforge.com/community/#ispconfig-3.23
+- Make sure to remove any content from the description that you did not add. For example, if there are no related log entries, remove the whole "Related log entries" part.
+-->
 
-## correct behaviour
-What should happen instead?
+## Summary
+<!-- What is happening and what is wrong with that? -->
 
-## environment
-Server OS: (debian/ubuntu/centos/...)  
-Server OS version: (wheezy/trusty/centos6/...)
-ISPConfig version: (3.0.5.4/3.1.5/3.1dev/...)
-_you can use `grep 'ISPC_APP_VERSION' /usr/local/ispconfig/server/lib/config.inc.php` to get it from the command line_
+## Steps to reproduce
+1. [First step]
+2. [Second step]
+3. [and so on...]
 
-If it might be related to the problem  
-```
-insert the output of `nginx -v` or `apachectl -v` here
-```
+## Correct behaviour
+<!-- What should happen instead? -->
+
+## Environment
+Server OS + version: (Debian 10/Ubuntu 20.04/CentOS 8/...) \
+ISPConfig version: (3.1.15p3/3.2.3/3.2dev/...)
+<!-- _you can use `grep 'ISPC_APP_VERSION' /usr/local/ispconfig/server/lib/config.inc.php` to get it from the command line_ -->
+Software version of the related software:
+<!-- You can use 'nginx -v' or 'apachectl -v' to find the webserver version. Use 'php -v' to find the PHP version.> Put this in code blocks, like so: -->
 ```
-insert the output of `php -v` here
+Output of the command
 ```
 
-## proposed fix
+## Proposed fix
 optional, of course.  
-if you want to post code snippets, please use  
+if you want to post code snippets, please use
 ```  
 your code  
 ```
-or attach a code file. Best is to create a merge request of course.  
+or attach a code file. Best is to create a merge request of course.
 
-## references
-if you know of related bugs or feature requests, please reference them by using `#<bugnumber>`, e. g. #123  
-if you have done a merge request already, please reference it by using `!<mergenumber>`, e. g. !12  
+## References
+if you know of related bugs or feature requests, please reference them by using `#<issuenumber>`, e. g. #6105
+if you have done a merge request already, please reference it by using `!<mergenumber>`, e. g. !1444 
 if you know of a forum post on howtoforge.com that deals with this topic, just add the link to the forum topic here
 
-## screenshots
+## Screenshots
 optional, of course.  
 Add screenshots of the problem by clicking "Attach a file" on the bottom right.
 
-## log entries
-```
-apache / nginx error.log lines (if related)
-```
+## Related log entries