Add poi icon for tower

data/presets/presets/man_made/observation.json

@@ -1,4 +1,5 @@
 {
+    "icon": "poi-tower",
     "geometry": [
         "point",
         "area"

data/presets/presets/man_made/tower.json

@@ -1,4 +1,5 @@
 {
+    "icon": "poi-tower",
     "fields": [
         "tower/type",
         "tower/construction",

svg/iD-sprite.json

@@ -286,6 +286,7 @@
     "poi-silo":                 { "viewBox": "475 335 15 15" },
     "poi-street-lamp":          { "viewBox": "490 335 15 15" },
     "poi-tool":                 { "viewBox": "505 335 15 15" },
+    "poi-tower":                { "viewBox": "520 335 15 15" },
 
     "poi-vending-machine-shape":   { "fill": "currentColor" },
     "poi-dice-shape":              { "fill": "currentColor" },
@@ -295,6 +296,7 @@
     "poi-silo-shape":              { "fill": "currentColor" },
     "poi-street-lamp-shape":       { "fill": "currentColor" },
     "poi-tool-shape":              { "fill": "currentColor" },
+    "poi-tower-shape":             { "fill": "currentColor" },
 
     "turn-yes":                 { "viewBox": "200 320 44 24" },
     "turn-no":                  { "viewBox": "244 320 44 24" },

svg/iD-sprite.src.svg

@@ -232,6 +232,9 @@
     </g>
   </g>
   <g id="poi">
+    <g id="poi-tower">
+      <path d="M526,340.5 L529,340.5 L529,350 L526,350 L526,340.5 z M529.75,335.25 L525.25,335.25 L525.25,335.75 L529.75,335.75 L529.75,335.25 z M527,337 L527,339 L525,339 L524.5,337 L527,337 z M530.5,337 L530,339 L528,339 L528,337 L530.5,337 z M532,336 L523,336 L524,340 L531,340 L532,336 z" fill="#000000" id="poi-tower-shape"/>
+    </g>
     <g id="poi-tool">
       <path d="M510.547,336.671 C510.801,336.986 510.989,337.328 511.109,337.697 C511.23,338.066 511.267,338.811 511.267,338.811 C511.267,338.811 511.173,339.548 511.027,339.9 C510.877,340.251 510.662,340.57 510.377,340.854 C510.191,341.041 509.5,341.5 509,341.5 C509,341.5 509,347 509,348.5 C509,350 507,350 507,348.5 C507,347.5 507,341.5 507,341.5 C506.5,341.5 506.11,340.999 505.932,340.828 C505.629,340.525 505.399,340.178 505.241,339.787 C505.083,339.395 505.002,339.002 505,338.604 C504.998,338.207 505.071,337.817 505.221,337.432 C505.369,337.049 505.593,336.707 505.893,336.406 C506.181,336.119 506.513,335.897 506.893,335.74 C507.274,335.585 507.667,335.504 508.073,335.5 L506.796,338.282 L507.695,339.577 L509.25,339.444 z M520,335.5 L518.5,335.5 C518.5,336 518,336.5 517.5,336.5 C517,336.5 516.077,336.5 515,336.5 C513.5,336.5 512,338.553 512,340 C513,339.053 513.385,339 515,339 L515,348.5 C515,350 517,350 517,348.5 C517,347 517,339 517,339 L517.5,339 C518,339 518.5,339.5 518.5,340 L520,340 C520,340 520,335.5 520,335.5 z" fill="#000000" id="poi-tool-shape"/>
     </g>