Cleaned up non-inlined usage of svg icons

No issue

ghost/admin/app/components/dashboard/parts/zero.hbs

@@ -1,5 +1,6 @@
 <div class="gh-dashboard-zero">
     <div class="gh-dashboard-zero-message">
+        {{svg-jar "analytics"}}
         <h4>Welcome to your Dashboard</h4>
         <p>You'll find member analytics here once<br />someone signs up.</p>
         <p><LinkTo @route="members">Add or import members &rarr;</LinkTo></p>

ghost/admin/app/services/media.js

@@ -1,8 +0,0 @@
-import Service from '@ember/service';
-import classic from 'ember-classic-decorator';
-
-// dummy service to account for not having the ember-responsive dependency
-// available for ember-light-table (we don't use it so no need for the dep)
-// see https://github.com/offirgolan/ember-light-table/issues/576
-@classic
-export default class MediaService extends Service {}

ghost/admin/app/styles/layouts/dashboard.css

@@ -919,20 +919,25 @@ Dashboard Zero */
 }
 
 .gh-dashboard-zero-message {
-    background: #fff url(icons/analytics.svg) no-repeat 50% 36px;
-    background-size: 48px 48px;
     min-width: 400px;
-    padding: 96px 48px 52px;
-    border-radius: 8px;
+    padding: 48px;
+    background: var(--white);
     text-align: center;
+    border-radius: 8px;
     box-shadow: 0 4px 24px rgba(0,0,0,0.066);
 }
 
+.gh-dashboard-zero-message svg {
+    width: 48px;
+    height: 48px;
+    margin: 0 0 8px;
+}
+
 .gh-dashboard-zero-message h4 {
     font-size: 1.7rem;
     font-weight: 700;
     line-height: 1em;
-    margin: 0 0 10px;
+    margin: 0 0 12px;
     padding: 0;
     color: var(--black);
     white-space: nowrap;

ghost/admin/app/styles/patterns/tables.css

@@ -61,37 +61,6 @@ table td,
     background: transparent;
 }
 
-/* Ember Light Table
-/* ---------------------------------------------------------- */
-
-.ember-light-table th {
-    white-space: nowrap;
-}
-
-.ember-light-table .lt-column .lt-sort-icon {
-    display: inline-block;
-    float: none;
-    margin-left: 0.3rem;
-}
-
-.lt-sort-icon.gh-icon-ascending {
-    background: url(icons/arrow-down-small.svg);
-}
-
-.lt-sort-icon.gh-icon-descending {
-    background: url(icons/arrow-up-small.svg);
-}
-
-.lt-sort-icon.gh-icon-ascending,
-.lt-sort-icon.gh-icon-descending {
-    fill: var(--darkgrey);
-    background-size: 10px, auto, contain;
-    background-repeat: no-repeat;
-    height: 9px;
-    width: 15px;
-    top: 1px;
-    position: relative;
-}
 
 /* Plain list tables */
 .table.list, 

ghost/admin/app/templates/settings/integrations.hbs

@@ -137,7 +137,7 @@
                 <LinkTo @route="settings.integrations.unsplash" data-test-link="unsplash">
                 <article class="apps-card-app">
                     <div class="apps-card-left">
-                        <figure class="apps-card-app-icon id-unsplash" style="background-image:url(assets/icons/unsplash.svg); background-size:30px;"></figure>
+                        <figure class="apps-card-app-icon id-unsplash" style="background-image:url(assets/img/unsplash.svg); background-size:30px;"></figure>
                         <div class="apps-card-meta">
                             <h3 class="apps-card-app-title">Unsplash</h3>
                             <p class="apps-card-app-desc">Beautiful, free photos</p>
@@ -160,7 +160,7 @@
                 <LinkTo @route="settings.integrations.firstpromoter" data-test-link="firstpromoter">
                 <article class="apps-card-app">
                     <div class="apps-card-left">
-                        <figure class="apps-card-app-icon id-unsplash" style="background-image:url(assets/icons/firstpromoter.png); background-size:30px;"></figure>
+                        <figure class="apps-card-app-icon id-unsplash" style="background-image:url(assets/img/firstpromoter.png); background-size:36px;"></figure>
                         <div class="apps-card-meta">
                             <h3 class="apps-card-app-title">FirstPromoter</h3>
                             <p class="apps-card-app-desc">Launch your member referral program</p>

ghost/admin/app/templates/settings/integrations/unsplash.hbs

@@ -23,7 +23,7 @@
         <section class="gh-main-section bt app-grid">
             <div class="gh-main-section-block app-detail-heading app-grid">
                 <div class="app-cell">
-                    <img class="app-icon pa2 id-unsplash" src="assets/icons/unsplash.svg" />
+                    <img class="app-icon pa2 id-unsplash" src="assets/img/unsplash.svg" />
                 </div>
                 <div class="app-cell">
                     <h3>Unsplash</h3>

ghost/admin/public/assets/img/unsplash.svg

@@ -0,0 +1,4 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 122.43 122.41">
+  <title>unsplash</title>
+  <path d="M83.86 54.15v34.13H38.57V54.15H0v68.26h122.43V54.15H83.86zM38.57 0h45.3v34.13h-45.3z"/>
+</svg>