Add reverser button to onewayCheck field

data/core.yaml

@@ -320,6 +320,7 @@ en:
     check:
       "yes": "Yes"
       "no": "No"
+      reverser: "Change Direction"
     add: Add
     none: None
     node: Node

data/presets/README.md

@@ -115,6 +115,7 @@ The complete JSON schema for fields can be found in [`data/presets/schema/field.
 **Checkboxes**
 * `check` - 3-state checkbox: `yes`, `no`, unknown (no tag)
 * `defaultCheck` - 2-state checkbox where checked produces `yes` and unchecked produces no tag
+* `onewayCheck` - 3-state checkbox for `oneway` fields, with extra button for direction switching
 
 **Radio Buttons**
 * `radio` - Multiple choice radio button field

data/presets/fields.json

@@ -1102,7 +1102,7 @@
         },
         "oneway_yes": {
             "key": "oneway",
-            "type": "check",
+            "type": "onewayCheck",
             "label": "One Way",
             "strings": {
                 "options": {
@@ -1114,7 +1114,7 @@
         },
         "oneway": {
             "key": "oneway",
-            "type": "check",
+            "type": "onewayCheck",
             "label": "One Way",
             "strings": {
                 "options": {

data/presets/fields/oneway.json

@@ -1,6 +1,6 @@
 {
     "key": "oneway",
-    "type": "check",
+    "type": "onewayCheck",
     "label": "One Way",
     "strings": {
         "options": {

data/presets/fields/oneway_yes.json

@@ -1,6 +1,6 @@
 {
     "key": "oneway",
-    "type": "check",
+    "type": "onewayCheck",
     "label": "One Way",
     "strings": {
         "options": {

data/presets/schema/field.json

@@ -61,6 +61,7 @@
                 "multiCombo",
                 "networkCombo",
                 "number",
+                "onewayCheck",
                 "radio",
                 "restrictions",
                 "tel",