Merge branch 'tc/gitlab-templates' into 'master'

Improve templates

See merge request !229

.gitlab/issue_templates/Bug.md

@@ -2,11 +2,19 @@
 
 ### One-sentence description
 
-### Current behaviour
+<!-- What breaks -->
 
-### Expected behaviour
+### Current behaviour / Reproducing the bug
+
+<!-- Please write what is happening and how we could reproduce it, if relevant -->
 
-### Steps to reproduce
+<!--
+1. Step 1
+2. Step 2
+3. ???
+4. Breakage
+-->
 
-1.
+### Expected behaviour
 
+<!-- Please write how what happened did not meet your expectations -->

.gitlab/issue_templates/Feature Request.md

 /label ~feature ~"priority: low"
 
+<!--
+    You want something new.
+-->
+
 ### One-sentence description
 
-### Desired behaviour
+<!-- What do you want? -->
+
+### Motivation
+
+<!-- Why should we care? -->
+
+### Desired functionality
+
+<!--
+    What we should support.
+    Please provide this in general terms, if possible.
+    You can provide suggestions on how to implement this later.
+
+    We like high-level descriptions as those allow us to better consider
+    the desired result. Assumptions on how the site works don't
+    necessarily match how we implemented certain things.
+-->
+
+### Suggested implementation
+
+<!--
+    If you have any notes on how we could achieve this feature,
+    share them here.
+-->

.gitlab/issue_templates/Technical Change Request.md

 /label ~"technical change" ~"priority: low"
 
+<!--
+    This template is for changes that do not affect the behaviour of the website.
+
+    Examples:
+
+     * Changes in CI
+     * Refactoring of code
+     * Technicie-facing documentation
+-->
+
 ### One-sentence description
 
+<!-- Please provide a brief description of the issue. Don't go into specifics. -->
+
 ### Why?
 
+<!-- Please motivate why we should invest into this change -->
+
 ### Current implementation
 
-### Desired implementation
+<!-- If relevant, describe how it's done currently -->
+
+### Suggested implementation
 
+<!-- Provide (a) suggestion(s) for how we could approach this -->