Update issue templates

.github/ISSUE_TEMPLATE/custom.md

@@ -0,0 +1,19 @@
+---
+name: Custom issue template
+about: Describe this issue template's purpose here.
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+Reporting bugs
+--------------
+- **Note the precise time the problem occurred** and describe the circumstances and steps that caused
+  the problem
+- Note the Build version (found in the About dialog in the app, when pressing the three dots in the
+  upper-right corner).
+- Obtain the app's log files, which can be found on the phone in
+  _/storage/emulated/0/Android/data/info.nightscout.androidaps/_
+  See https://androidaps.readthedocs.io/en/latest/Usage/Accessing-logfiles.html
+- Open an issue at https://github.com/nightscout/AndroidAPS/issues/new