chore: update github templates

* Deletes unused PR and issue templates.
* Deletes deprecated transifex files.
* Prevent stale issues from being closed automatically.

Co-Authored-by: Pascal Repond <pascal.repond@rero.ch>

.github/ISSUE_TEMPLATE.md

@@ -6,28 +6,5 @@ labels: ''
 assignees: ''
 ---
 
-**Describe the issue**
-A clear and concise description of what the issue is.
-
-**To Reproduce**
-Steps to reproduce the behavior:
-1. Go to '…'
-1. Log in as '…'
-1. Click on '…'
-1. Scroll down to '…'
-1. See error
-
-**Expected behavior**
-A clear and concise description of what you expected to happen.
-
-**Software version**
-Tell us which version you're using:
-
-  * from which server URL do you come from? ils.test or ilsdev?
-  * checks the version on homepage. Do you see the version as 0.5.0 or a hash as 2493ca6?
-
-**Screenshots**
-If applicable, add screenshots to help explain your problem.
-
-**Additional context**
-Add any other context about the problem here.
+**If your issue concerns a SONAR functionality, please open it on the
+sonar project: https://github.com/rero/sonar/issues**

.github/workflows/stale.yml

@@ -13,8 +13,8 @@ jobs:
         repo-token: ${{ secrets.GITHUB_TOKEN }}
         # Make issue/PR as stale after 6 months
         days-before-stale: 180
-        # Do not close issue/PR marked as stale (will be changed later)
-        days-before-close: 0
+        # Do not close issue/PR marked as stale
+        days-before-close: -1
         stale-issue-message: 'This issue is stale because it has been open 6 months with no activity.'
         stale-pr-message: 'This PR is stale because it has been open 6 months with no activity.'
         # Set the label added to issue marked as stale (leave default value)