Feature: Add bug-report template (#372)

* Add bug-report template

* Update template

* Update bug report template

.github/ISSUE_TEMPLATE/bug-report.md

@@ -0,0 +1,49 @@
+---
+name: Bug report
+about: Create a report to fix a bug
+---
+
+<!--
+BEFORE SUBMITTING: Please search to make sure this issue has not been opened already
+-->
+
+### Title/Description
+<!--
+A clear and concise description of what the bug is.
+-->
+
+### Environment
+ - Browser:
+ - Safe:
+ - Wallet:
+ - App Version:
+ - Environment:
+    <!--
+    delete those who doesn't apply and complete the PR# if required
+    -->
+   - dev (rinkeby)
+   - staging (rinkeby)
+   - production (mainnet)
+   - PR #
+
+### Steps to reproduce
+<!--
+1. Go to '...'
+2. Click on '....'
+3. Scroll down to '....'
+-->
+
+### Expected result
+<!--
+A clear description of what you expected to happen.
+-->
+
+### Obtained result
+<!--
+A clear description of what you expected to happen.
+-->
+
+### Screenshots
+<!--
+If applicable, add screenshots to help explain your problem.
+-->