Update issue templates

.github/ISSUE_TEMPLATE/bug_report.md

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+---
+name: Bug report
+about: Create a report to help us improve
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+<!-- Please report security issues by email to security@matrix.org -->
+
+<!-- This is a bug report template. By following the instructions below and
+filling out the sections with your information, you will help the us to get all
+the necessary data to fix your issue.
+
+You can also preview your report before submitting it. You may remove sections
+that aren't relevant to your particular case.
+
+Text between <!-- and --​> marks will be invisible in the report.
+-->
+
+### Description
+
+Describe here the problem that you are experiencing, or the feature you are requesting.
+
+### 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! -->
+
+<!-- Include screenshots if possible: you can drag and drop images below. -->
+
+### Version information
+
+<!-- IMPORTANT: please answer the following questions, to help us narrow down the problem -->
+
+- **Platform**: web (in-browser) or desktop?
+
+For the web app:
+
+- **Browser**: Chrome, Safari, Firefox? which version?
+- **OS**: Windows, macOS, Ubuntu, Arch Linux, etc?
+- **URL**: riot.im/develop / riot.im/app / somewhere else? If a private server, what version of riot-web?
+
+For the desktop app:
+
+- **OS**: Windows, macOS, Ubuntu, Arch Linux, etc?
+- **Version**: 0.x.y <!-- check the user settings panel if unsure -->