Cyclestreets: only add maxspeed=30 in Belgium; change 'language' to 'locale' in changeset tags, load notes in import_viewer up to two years back, language tweaks

langs/layers/en.json

@@ -3119,6 +3119,7 @@
         }
     },
     "gps_track": {
+        "name": "Your travelled track",
         "tagRenderings": {
             "Privacy notice": {
                 "render": "This is the path you've travelled since this website is opened. Don't worry - this is only visible to you and no one else. Your location data is never sent off-device."

langs/layers/nl.json

@@ -3066,6 +3066,7 @@
         }
     },
     "gps_track": {
+        "name": "Jouw afgelegde route",
         "tagRenderings": {
             "Privacy notice": {
                 "render": "Dit is waar je was sinds je deze website hebt geopened. Dit is enkel zichtbaar voor jou en niemand anders, je locatie wordt niet verstuurd"