Update issue templates

.github/ISSUE_TEMPLATE/bug_report.md

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+---
+name: Bug report
+about: Report a defect
+title: ''
+labels: ''
+assignees: developersu
+
+---
+
+**Describe the bug (mandatory)**
+A clear and concise description of what the bug is.
+
+**Information about environment (mandatory):**
+ - OS: [e.g. Windows 7 x64]
+ - Java version [run 'java -version']
+
+**Steps to reproduce**
+Steps to reproduce the behavior:
+1. Go to '...'
+2. Click on '....'
+3. See error
+
+**Expected behavior**
+A clear and concise description of what you expected to happen.
+
+**Screenshots and/or information from application log**
+If applicable, add screenshots to help explain your problem.
+
+**Did you see this issue in previous versions?**
+Yes / No / Don't know
+
+**Additional context**
+Add any other context about the problem here