Output enumerated value as msg.textvalue

For input nodes that use an enumerated value as data, also output
the textual value as `msg.textvalue`.
For these nodes also show this textual value in the status text.

README.md

@@ -8,7 +8,7 @@ It is also possible to use this library when running Node-RED on a separate host
 
 This library is not officially supported by Victron Energy: don't call our dealers or other support channels for help.
 
-For any questions or help, please turn to [community.victronenergy.com](https://community.victronenergy.com/smart-spaces/71/node-red.html). Pull-requests are willingly encouraged!
+For any questions or help, please turn to [community.victronenergy.com](https://community.victronenergy.com). Pull-requests are willingly encouraged!
 
 ## Requirements when self-installing this node palette
 - A Victron system that includes a GX device (note that for trial & development you could use the demo mode in Venus OS, Settings -> General)
@@ -46,6 +46,8 @@ In case the data type is enumerated, an approppriate enum legend is shown below
 If in the configuration node, the _Context store_ checkbox has been set, the received values will also
 be stored in the (global) context.
 
+
+
 ### Output Nodes
 
 Input Nodes have the same options available, but the selectable 'measurement' only lists writable services. Additionally, the user can set an initial value to the service, which is sent whenever the flow is deployed.

scripts/service2doc.js

@@ -88,6 +88,7 @@ searchLabelInfo(registerHTML).then(function (labelinfo) {
       show('md', 'The measurement unit type is shown in the measurement label in brackets, e.g. Battery voltage (V). In case the data type is enumerated, an appropriate enum legend is shown below the selected option.\n')
       show('md', 'If the data type is _float_, a dropdown for rounding the output appears.\n')
       show('md', 'By default the node outputs its value every five seconds. If the only changes is checked, the node will only output on value changes.\n')
+      show('md', 'In case of an enumerated type, the textual value of the payload is also send out as `msg.textvalue`.')
       show('md', '![input nodes](https://github.com/victronenergy/node-red-contrib-victron/blob/master/documentation/images/edit-vebus-input.png)\n')
       Object.keys(services).forEach(function (k) {
         show('nodered', '<script type="text/x-red" data-help-name="victron-' + k + '">')
@@ -108,7 +109,7 @@ searchLabelInfo(registerHTML).then(function (labelinfo) {
         show('md', '## ' + labelinfo[k])
         show('nodered', '<h3>Details</h3>')
         if (/input-/.test(k)) {
-          show('nodered', '<p>The <strong>input nodes</strong> have two selectable inputs: the devices select and measurement select. The available options are dynamically updated based on the data that is actually available on the Venus device.</p> <ul> <li><em>Device select</em> - lists all available devices</li> <li><em>Measurement select</em> - lists all available device-specific measurements</li> <li><em>Node label input field</em> - sets a custom label for the node</li> </ul> <p>The measurement unit type is shown in the measurement label in brackets, e.g. Battery voltage (V). In case the data type is enumerated, an appropriate enum legend is shown below the selected option.</p>')
+          show('nodered', '<p>The <strong>input nodes</strong> have two selectable inputs: the devices select and measurement select. The available options are dynamically updated based on the data that is actually available on the Venus device.</p> <ul> <li><em>Device select</em> - lists all available devices</li> <li><em>Measurement select</em> - lists all available device-specific measurements</li> <li><em>Node label input field</em> - sets a custom label for the node</li> </ul> <p>The measurement unit type is shown in the measurement label in brackets, e.g. Battery voltage (V). In case the data type is enumerated, an appropriate enum legend is shown below the selected option. In this case the node will also output the enumerated textual value as <tt>msg.textvalue</tt>.</p>')
           show('nodered', '<p>If the data type is <em>float</em>, a dropdown for rounding the output appears.</p>')
           show('nodered', '<p>By default the node outputs its value every five seconds. If the <em>only changes</em> is checked, the node will only output on value changes.</p>')
         } else {