add aladin surveys as internal hips

added a 'name' property to the surveys list, so that ASTRON hips surveys can be distinguished from named surveys that are already in Aladin Light

esap/esap/configuration/adex.py

@@ -18,35 +18,50 @@ settings = {
     },
     "surveys": [
         {
+            "name": "--- ASTRON HiPS ---",
+        },
+        {
+            "name": "apertif_dr1",
             "hips_name": "apertif_dr1",
             "hips_url": "https://hips.astron.nl/ASTRON/P/apertif_dr1",
             "format": "png"
         },
         {
+            "name": "lotss_dr1_low",
             "hips_name": "lotss_dr1_low",
             "hips_url": "https://hips.astron.nl/ASTRON/P/lotss_dr1_low",
             "format": "png"
         },
         {
+            "name": "lotss_dr1_high",
             "hips_name": "lotss_dr1_high",
             "hips_url": "https://hips.astron.nl/ASTRON/P/lotss_dr1_high",
             "format": "png"
         },
         {
+            "name": "tgssadr",
             "hips_name": "tgssadr",
             "hips_url": "https://hips.astron.nl/ASTRON/P/tgssadr",
             "format": "png"
         },
         {
+            "name": "lotss_dr2_low",
             "hips_name": "lotss_dr2_low",
             "hips_url": "https://hips.astron.nl/ASTRON/P/lotss_dr2_low",
             "format": "png"
         },
         {
+            "name": "lotss_dr2_high",
             "hips_name": "lotss_dr2_high",
             "hips_url": "https://hips.astron.nl/ASTRON/P/lotss_dr2_high",
             "format": "png"
         },
+        {
+            "name": "--- Aladin HiPS ---",
+        },
+        {
+            "name": "P/DSS2/color",
+        },
     ],
     "color_maps": ["native", "grayscale", "cubehelix", "eosb", "rainbow"],
     "datasets": [