Update issue templates (#4293)

* Update bug_report.md

* Update bug_report.md

* Update bug_report.md

* update

* remove 'question' issue template

.github/ISSUE_TEMPLATE/bug_report.md

@@ -2,30 +2,88 @@
 name: Bug report
 about: Create a report to help us improve
 title: ''
-labels: ''
+labels: 'bug'
 assignees: ''
 
 ---
 
-**Describe the bug**
-A clear and concise description of what the bug is.
-Please provide a full traceback of the error that you received (if any), regardless of how long it is. The full stack trace is important for us to be able to help you.
+<!--
+Please fill this template entirely and do not erase any of it.
+We reserve the right to close without a response bug reports which are incomplete.
 
-**To Reproduce**
-Steps to reproduce the behavior
-1. Go to '...'
-2. Click on '....'
-3. Scroll down to '....'
-4. See error
+If you can't fill in the checklist then it's likely that this is a question, not a bug,
+in which case it probably belongs on our discource forum instead:
 
-**Expected behavior**
-A clear and concise description of what you expected to happen.
+https://discourse.allennlp.org/
+-->
 
-**System (please complete the following information):**
- - OS: [e.g. OSX, Linux]
- - Python version: [if it's not 3.6.1 or later, that's probably your problem]
- - AllenNLP version: [e.g. v1.0.0.rc1, or "I installed from master"]
- - PyTorch version: (if you installed it yourself)
+## Checklist
 
-**Additional context**
-Add any other context about the problem here.
+<!-- To check an item on the list replace [ ] with [x]. -->
+
+- [ ] I have verified that the issue exists against the `master` branch of AllenNLP.
+- [ ] I have read the relevant section in the [contribution guide](/~https://github.com/allenai/allennlp/blob/master/CONTRIBUTING.md#bug-fixes-and-new-features) on reporting bugs.
+- [ ] I have checked the [issues list](/~https://github.com/allenai/allennlp/issues) for similar or identical bug reports.
+- [ ] I have checked the [pull requests list](/~https://github.com/allenai/allennlp/pulls) for existing proposed fixes.
+- [ ] I have checked the [CHANGELOG](/~https://github.com/allenai/allennlp/blob/master/CHANGELOG.md) and the [commit log](/~https://github.com/allenai/allennlp/commits/master) to find out if the bug was already fixed in the master branch.
+- [ ] I have included in the "Description" section below a traceback from any exceptions related to this bug.
+- [ ] I have included in the "Related issues or possible duplicates" section beloew all related issues and possible duplicate issues (If there are none, check this box anyway).
+- [ ] I have included in the "Environment" section below the name of the operating system and Python version that I was using when I discovered this bug.
+- [ ] I have included in the "Environment" section below the output of `pip freeze`.
+- [ ] I have included in the "Steps to reproduce" section below a minimally reproducible example.
+
+
+## Description
+
+<!-- Please provide a clear and concise description of what the bug is here. -->
+
+<details>
+<summary><b>Python traceback:</b></summary>
+<p>
+
+<!-- Paste the traceback from any exception (if there was one) in between the next two lines below -->
+```
+```
+
+</p>
+</details>
+
+
+## Related issues or possible duplicates
+
+- None
+
+
+## Environment
+
+<!-- Provide the name of operating system below (e.g. OS X, Linux) -->
+OS:
+
+<!-- Provide the Python version you were using (e.g. 3.7.1) -->
+Python version:
+
+<details>
+<summary><b>Output of <code>pip freeze</code>:</b></summary>
+<p>
+
+<!-- Paste the output of `pip freeze` in between the next two lines below -->
+```
+```
+
+</p>
+</details>
+
+
+## Steps to reproduce
+
+
+<details>
+<summary><b>Example source:</b></summary>
+<p>
+
+<!-- Add a fully runnable example in between the next two lines below that will reproduce the bug -->
+```
+```
+
+</p>
+</details>