Fixes in style (#1730)

* Fix text-field expressions in POI

- Removed text-field expressions from transport, place of worship and accommodation.
- The language switcher wasn't able to parse them and they are not neccessary in the style.
- Added `"text-optional": true` to Accommodation - if both icon and text can't fit, only icon will be displayed, which simulates a bit the previous behaviour.

* Fix filter in City layer

Fixed filter, Istanbul was missing.

layers/place/style.json

@@ -384,9 +384,10 @@
           "city"
         ],
         [
-          "!=",
+          "!in",
-          "rank",
+          "capital",
-          1
+          1,
+          2
         ]
       ],
       "order": 244

layers/poi/style.json

@@ -959,18 +959,17 @@
           ]
         ],
         "text-anchor": "top",
-        "text-field": {
+        "text-field": [
-          "stops": [
+          "coalesce",
           [
-              15,
+            "get",
-              ""
+            "name:en"
           ],
           [
-              16,
+            "get",
-              "{name}"
+            "name"
           ]
-          ]
+        ],
-        },
         "text-font": [
           "Open Sans Semibold",
           "Noto Sans Bold"
@@ -1298,18 +1297,17 @@
           ]
         ],
         "text-anchor": "top",
-        "text-field": {
+        "text-field": [
-          "stops": [
+          "coalesce",
           [
-              17,
+            "get",
-              ""
+            "name:en"
           ],
           [
-              18,
+            "get",
-              "{name}"
+            "name"
           ]
-          ]
+        ],
-        },
         "text-font": [
           "Open Sans Semibold",
           "Noto Sans Bold"
@@ -1319,6 +1317,7 @@
           0,
           0.6
         ],
+        "text-optional": true,
         "text-padding": 2,
         "text-size": {
           "stops": [
@@ -1374,18 +1373,17 @@
         ],
         "text-allow-overlap": false,
         "text-anchor": "top",
-        "text-field": {
+        "text-field": [
-          "stops": [
+          "coalesce",
           [
-              15,
+            "get",
-              ""
+            "name:en"
           ],
           [
-              16,
+            "get",
-              "{name}"
+            "name"
           ]
-          ]
+        ],
-        },
         "text-font": [
           "Open Sans Semibold",
           "Noto Sans Bold"