Update issue templates (#868)

.github/ISSUE_TEMPLATE/bug_report.md

@@ -9,11 +9,19 @@ assignees: ''
 
 ## Bug Description
 
-<!--- Describe the problem -->
+<!---
+Describe the problem.
+
+Note: If the bug SOLELY appears in the Threema app on your mobile device,
+please do not open an issue here and instead use the support form at
+https://threema.ch/support or send a Threema message to the contact *SUPPORT.
+-->
 
 ## Steps to Reproduce (for bugs)
 
-<!--- Provide a screenshot and/or an unambiguous set of steps to reproduce this bug. -->
+<!---
+Provide a screenshot and/or an unambiguous set of steps to reproduce this bug.
+-->
 
 1.
 2.
@@ -22,13 +30,17 @@ assignees: ''
 
 ## Potential Solution
 
-<!--- Not obligatory, but suggest a fix/reason for the bug, -->
-<!--- or ideas how to implement the addition or change -->
+<!---
+Not required, but suggest a fix/reason for the bug, or ideas how to implement
+the addition or change.
+-->
 
 ## Your Environment
 
-<!--- Include as many relevant details about the environment you experienced the bug in. -->
-<!--- Feel free to remove irrelevant lines. -->
+<!---
+Include as many relevant details about the environment you experienced the bug
+in. Feel free to remove irrelevant lines.
+-->
 
 * Threema Web version:
 * Threema App version:

.github/ISSUE_TEMPLATE/feature_request.md

@@ -1,22 +1,29 @@
 ---
 name: Feature request
-about: Suggest an idea for this project
+about: Suggest an idea to improve this project
 title: ''
-labels: ''
+labels: feature
 assignees: ''
 
 ---
 
 ## Summary
 
-<!-- A short one-sentence summary of the feature you would like to have in Threema Web -->
+<!--
+A short one-sentence summary of the feature you would like to have in
+Threema Web.
+-->
 
 ## Detailed Description
 
-<!--- A clear and concise description of what the problem is. Ex. I'm always frustrated when [...] -->
-<!--- Describe the solution you'd like -->
-<!--- Describe alternatives you've considered -->
+<!---
+A clear and concise description of the proposed feature.
+Describe the solution you'd like.
+Describe alternatives you've considered.
+-->
 
 ## Additional context
 
-<!--- Add any other context or screenshots about the feature request here. -->
+<!---
+Add any other context or screenshots about the feature request here.
+-->

.github/ISSUE_TEMPLATE/support_request.md

@@ -7,6 +7,6 @@ assignees: ''
 
 ---
 
-Note: Do NOT file support requests as issues on Github!
-Instead, use the support form at https://threema.ch/support
-or send a Threema message to the contact *SUPPORT.
+Do NOT file support requests as issues on Github! Instead, use the support
+form at https://threema.ch/support or send a Threema message to the contact
+*SUPPORT.