Use .element.accent instead of elementGreen colour asset. (#79)

Remove local copy of Element Green

ElementX/Resources/Assets.xcassets/Colors/ElementGreen.colorset/Contents.json

@@ -1,38 +0,0 @@
-{
-  "colors" : [
-    {
-      "color" : {
-        "color-space" : "srgb",
-        "components" : {
-          "alpha" : "1.000",
-          "blue" : "139",
-          "green" : "189",
-          "red" : "13"
-        }
-      },
-      "idiom" : "universal"
-    },
-    {
-      "appearances" : [
-        {
-          "appearance" : "luminosity",
-          "value" : "dark"
-        }
-      ],
-      "color" : {
-        "color-space" : "srgb",
-        "components" : {
-          "alpha" : "1.000",
-          "blue" : "139",
-          "green" : "198",
-          "red" : "13"
-        }
-      },
-      "idiom" : "universal"
-    }
-  ],
-  "info" : {
-    "author" : "xcode",
-    "version" : 1
-  }
-}

ElementX/Resources/Assets.xcassets/Images/timelineComposerSendMessage.imageset/Contents.json

@@ -1,23 +1,16 @@
 {
   "images" : [
     {
-      "filename" : "send_message_icon.png",
-      "idiom" : "universal",
-      "scale" : "1x"
-    },
-    {
-      "filename" : "send_message_icon@2x.png",
-      "idiom" : "universal",
-      "scale" : "2x"
-    },
-    {
-      "filename" : "send_message_icon@3x.png",
-      "idiom" : "universal",
-      "scale" : "3x"
+      "filename" : "timelineComposerSendMessage.svg",
+      "idiom" : "universal"
     }
   ],
   "info" : {
     "author" : "xcode",
     "version" : 1
+  },
+  "properties" : {
+    "preserves-vector-representation" : true,
+    "template-rendering-intent" : "template"
   }
 }

ElementX/Resources/Assets.xcassets/Images/timelineComposerSendMessage.imageset/timelineComposerSendMessage.svg

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
+<svg width="100%" height="100%" viewBox="0 0 36 36" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" xml:space="preserve" xmlns:serif="http://www.serif.com/" style="fill-rule:evenodd;clip-rule:evenodd;stroke-linejoin:round;stroke-miterlimit:2;">
+    <path d="M18,0C27.934,0 36,8.066 36,18C36,27.934 27.934,36 18,36C8.066,36 0,27.934 0,18C0,8.066 8.066,0 18,0ZM27.83,19.085L12.259,26.867C11.21,27.391 10.119,26.266 10.631,25.24C10.631,25.24 12.561,21.343 13.092,20.322C13.623,19.301 14.23,19.124 19.874,18.395C20.082,18.368 20.253,18.21 20.253,18C20.253,17.79 20.082,17.632 19.874,17.605C14.23,16.876 13.623,16.699 13.092,15.678C12.561,14.658 10.631,10.76 10.631,10.76C10.119,9.734 11.21,8.609 12.259,9.133L27.83,16.915C28.724,17.362 28.724,18.638 27.83,19.085Z" style="fill:rgb(13,189,139);"/>
+</svg>