Update issue templates

.github/ISSUE_TEMPLATE/Bug_report.md

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+---
+name: Bug report
+about: This template is only for bug reports
+
+---
+
+<!-- Please, read the documentation: https://docs.kanboard.org/ -->
+<!-- Ask questions on the Forum: https://github.com/kanboard/forum/issues -->
+
+### Actual behaviour
+
+<!-- A clear and concise description of what the bug is. -->
+
+### Expected behaviour
+
+<!-- A clear and concise description of what you expected to happen. -->
+
+### Steps to reproduce
+
+
+### Screenshots
+
+<!-- If applicable, add screenshots to help explain your problem. -->
+
+### Logs
+
+
+### Configuration
+
+- Kanboard version:
+- Database type and version:
+- PHP version:
+- OS:
+- Browser: