BookmarksImportDialog: Add HighDPI pixmaps for browser icons

src/lib/bookmarks/bookmarksimport/bookmarksimportdialog.ui

@@ -75,7 +75,7 @@
           </property>
           <property name="icon">
            <iconset resource="../data/icons.qrc">
-            <normaloff>:/icons/browsers/internet-explorer.png</normaloff>:/icons/browsers/internet-explorer.png</iconset>
+            <normaloff>:/icons/browsers/ie.png</normaloff>:/icons/browsers/ie.png</iconset>
           </property>
          </item>
          <item>
@@ -84,7 +84,7 @@
           </property>
           <property name="icon">
            <iconset resource="../data/icons.qrc">
-            <normaloff>:/icons/browsers/html.png</normaloff>:/icons/browsers/html.png</iconset>
+            <normaloff>:/icons/browsers/html.svg</normaloff>:/icons/browsers/html.svg</iconset>
           </property>
          </item>
         </widget>

src/lib/data/icons.qrc

@@ -30,14 +30,19 @@
         <file>icons/other/adblock-disabled.png</file>
         <file>icons/menu/search-icon.svg</file>
         <file>icons/browsers/firefox.png</file>
+        <file>icons/browsers/firefox@2x.png</file>
         <file>icons/browsers/chrome.png</file>
+        <file>icons/browsers/chrome@2x.png</file>
         <file>icons/browsers/opera.png</file>
+        <file>icons/browsers/opera@2x.png</file>
+        <file>icons/browsers/ie.png</file>
+        <file>icons/browsers/ie@2x.png</file>
+        <file>icons/browsers/html.svg</file>
         <file>icons/preferences/application-x-theme.png</file>
         <file>icons/preferences/dialog-password.png</file>
         <file>icons/preferences/dialog-question.png</file>
         <file>icons/preferences/mail-inbox.png</file>
         <file>icons/preferences/preferences-system-firewall.png</file>
-        <file>icons/browsers/html.png</file>
         <file>icons/exeicons/qupzilla-window.png</file>
         <file>icons/preferences/text-x-sql.png</file>
         <file>icons/sites/duck.png</file>
@@ -48,7 +53,6 @@
         <file>icons/menu/tab.svg</file>
         <file>icons/other/geolocation.png</file>
         <file>icons/other/notification.png</file>
-        <file>icons/browsers/internet-explorer.png</file>
         <file>icons/sites/startpage.png</file>
         <file>icons/sites/w3.png</file>
         <file>icons/other/loading.png</file>

src/lib/data/icons/browsers/html.svg

@@ -0,0 +1,26 @@
+<svg width="32" xmlns="http://www.w3.org/2000/svg" height="32" xmlns:xlink="http://www.w3.org/1999/xlink">
+ <defs>
+  <linearGradient id="a" y1="392.36" y2="365.36" x2="0" gradientUnits="userSpaceOnUse" gradientTransform="translate(309.57 152.44)">
+   <stop stop-color="#ffffff" stop-opacity="0"/>
+   <stop offset="1" stop-color="#ffffff" stop-opacity=".2"/>
+  </linearGradient>
+  <linearGradient id="b" y1="17" y2="24" x1="47" x2="54" gradientUnits="userSpaceOnUse" gradientTransform="translate(357.57 507.8)">
+   <stop stop-color="#060606"/>
+   <stop offset="1" stop-opacity="0"/>
+  </linearGradient>
+  <path id="c" d="m389.57 545.8v-28h15l7 7v21h-14z"/>
+ </defs>
+ <g transform="translate(-384.57-515.8)">
+  <g color-rendering="auto" color-interpolation-filters="linearRGB" shape-rendering="auto" image-rendering="auto" text-rendering="auto" color-interpolation="sRGB" color="#000000">
+   <use fill="#cf74e0" xlink:href="#c"/>
+   <g transform="scale(1-1)">
+    <rect opacity=".5" x="389.57" y="-518.8" width="15" fill="#ffffff" height="1"/>
+    <rect opacity=".25" x="389.57" y="-545.8" width="22" height="1"/>
+   </g>
+   <path opacity=".5" fill="#ffffff" fill-rule="evenodd" d="m411.57 524.8l-7-7v7z"/>
+  </g>
+  <path opacity=".1" fill="url(#b)" fill-rule="evenodd" d="m404.57 524.8l7 7v-7z"/>
+  <path opacity=".75" color-interpolation-filters="linearRGB" color="#000000" image-rendering="auto" color-rendering="auto" d="m17.09 12l-2.947 11h1.039l2.982-10.992zm-4.512 2l-2.961 3.145-.324.348.324.346 2.943 3.162.715-.695-2.621-2.813 2.639-2.797zm7.465.283l-.715.695 2.639 2.797-2.621 2.813.715.695 2.943-3.162.324-.346-.324-.348z" color-interpolation="sRGB" text-rendering="auto" fill="#ffffff" shape-rendering="auto" transform="translate(384.57 515.8)"/>
+  <use fill="url(#a)" xlink:href="#c"/>
+ </g>
+</svg>