Update issue templates

.github/ISSUE_TEMPLATE/epic.md

 ---
 name: Epic
 about: Use this template to create a new epic for the sprint backlog
-title: Describe the epic in a few keywords
+title: Describe the epic in a few key words
 labels: ''
 assignees: ''
 

.github/ISSUE_TEMPLATE/task.md

@@ -9,5 +9,8 @@ assignees: ''
 
 ---
 
+<!-- A (draft) PR always references the task it belongs to. -->
 # Task
-<!-- write down your task here, or leave it blank -->
+
+## Acceptance criterea
+<!-- how to verify when this task is completed? -->

.github/ISSUE_TEMPLATE/user-story.md

 ---
 name: User Story
 about: Use this template to create a new user story for in the sprint backlog
-title: Write the user story here
+title: Describe the user-story in a few key words
 labels: ''
 assignees: ''
 
@@ -33,7 +33,7 @@ Mention here the reason of the user story, any technical details, link to meetin
 ## Tasks
 
 <!--  
-Tasks are actionable items, which may contain technical details. A user story is usually broken down in multiple tasks and assigned to a person. 
+Tasks are actionable items, which may contain technical details. A user story is usually broken down in multiple tasks and assigned to a person. If you have many tasks, please consider making this user story an epic
 -->
 
 | Task | Assignee |  Done (1), or 0 |
@@ -44,13 +44,3 @@ Tasks are actionable items, which may contain technical details. A user story is
 new row template below 
 |  task | unassigned | 0 | 
 -->
-
-## Dependencies
-### Devops
-<!-- What is needed from Devops? -->
-
-### Research
-<!-- What is needed from research? -->
-
-### Other 
-<!-- Other dependencies? -->