lib/ur: Normalise contract between syncthing and ursrv (#6770)

* Fix ui, hide report date

* Undo Goland madness

* UR now web scale

* Fix migration

* Fix marshaling, force tick on start

* Fix tests

* Darwin build

* Split "all" build target, add package name as a tag

* Remove pq and sql dep from syncthing, split build targets

* Empty line

* Revert "Empty line"

This reverts commit f74af2b067.

* Revert "Remove pq and sql dep from syncthing, split build targets"

This reverts commit 8fc295ad00.

* Revert "Split "all" build target, add package name as a tag"

This reverts commit f4dc889951.

* Normalise contract types

* Fix build add more logging

gui/default/syncthing/usagereport/usageReportPreviewModalView.html

@@ -6,13 +6,13 @@
     <p translate>The aggregated statistics are publicly available at the URL below.</p>
     <p><a href="https://data.syncthing.net/" target="_blank">https://data.syncthing.net/</a></p>
     <label translate>Version</label>
-    <select id="urPreviewVersion" class="form-control" ng-model="$parent.$parent.reportDataPreviewVersion" ng-change="refreshReportDataPreview()">
+    <select id="urPreviewVersion" class="form-control" ng-model="reportDataPreviewVersion" ng-change="refreshReportDataPreview(reportDataPreviewVersion, reportDataPreviewDiff)">
       <option selected value translate>Select a version</option>
       <option ng-repeat="n in urVersions()" value="{{n}}">{{'Version' | translate}} {{n}}</option>
     </select>
-    <div class="checkbox" ng-if="$parent.$parent.reportDataPreviewVersion > 2">
+    <div class="checkbox" ng-if="reportDataPreviewVersion > 2">
       <label>
-        <input type="checkbox" ng-model="$parent.$parent.$parent.reportDataPreviewDiff" ng-change="refreshReportDataPreview()" />
+        <input type="checkbox" ng-model="reportDataPreviewDiff" ng-change="refreshReportDataPreview(reportDataPreviewVersion, reportDataPreviewDiff)" />
         <span translate>Show diff with previous version</span>
       </label>
     </div>