Clear time-to-landing display when payload data is cleared.

README.md

@@ -20,6 +20,8 @@ You can then clone this repository with:
 $ git clone https://github.com/projecthorus/chasemapper.git
 ```
 
+**Note: When updating this repository with git pull, make sure to update [horuslib](https://github.com/projecthorus/horus_utils/) as well!**
+
 ## Configuration & Startup
 Many settings are defined in the horusmapper.cfg configuration file.
 Create a copy of the example config file using

templates/index.html

@@ -693,6 +693,8 @@
                     // Update tables.
                     updateTelemetryTable();
                     updateSummaryDisplay();
+                    // Clear the time-to-landing display.
+                    $('#time_to_landing').text("");
                 }
             });