Update issue templates

.github/ISSUE_TEMPLATE/redesign-issue.md

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+---
+name: Redesign Issue
+about: Bugs, feedback or feature requests specifically associated with the Redesign
+  project (https://riot.im/experimental)
+title: ''
+labels: redesign
+assignees: ''
+
+---
+
+<!-- Thanks for providing feedback on the redesign! By filling out the sections with your information, you will help the us to process your issue.
+-->
+
+- **Browser**: Chrome, Safari, Firefox? which version?
+- **OS**: Windows, macOS, Ubuntu, Arch Linux, etc?
+
+### Description
+
+Describe here the problem that you are experiencing, or the feature you are requesting.
+Include screenshots if possible: you can drag and drop images below.
+
+### Steps to reproduce
+
+- For bugs, list the steps
+- that reproduce the bug
+- using hyphens as bullet points
+
+Describe how what happens differs from what you expected.
+
+Log: sent/not sent?    <!-- You can send us the app's logs via the 'Report bug'
+link on the 'Settings' page. Very important for hard-to-reproduce bugs. Please
+file a bug here too! -->