Add Nightscout website version to Issue template

.github/ISSUE_TEMPLATE

 <!--- Provide a general summary of the issue in the Title above -->
 
-## Your Environment
+#### Your Environment
 <!--- Include as many relevant details about the environment you experienced the bug in -->
 * Uploader Version Number:
 * Your Android Phone Model Name (e.g. Samsung J1 Ace):
 * Android Version Number (e.g. use 4.4 for 4.4.4):
 * Network Connection at the time the issue occurred (Wi-Fi, Mobile):
+* (if relevant) Nightscout website version (e.g. 0.8.4 Funnel cake, master / dev branch):
 
-## Brief Explanation of Issue
+#### Brief Explanation of Issue
 <!-- e.g. triggered when moved out of range, switched network -->
 
-## Uploader Error Code
+#### Uploader Error Code
 <!--- if any -->
 
-## Steps to Reproduce (for bugs)
+#### Steps to Reproduce (for bugs)
 <!--- Provide a link to a live example, or an unambiguous set of steps to -->
 <!--- reproduce this bug. -->
 1.
@@ -21,7 +22,7 @@
 3.
 4.
 
-## Severity Score
+#### Severity Score
 <!-- Your take on how serious the issue was from 1 to 5 -->
 <!-- 1 = Mild (no impact on care) -->
 <!-- 5 = Severe (potential impact on care) -->