test graphics

docs.it4i/img/icon-downloads-circle.svg

+<?xml version="1.0" encoding="utf-8"?>
+<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
+<svg version="1.1" id="Layer_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px" width="288px" height="288px" viewBox="0 0 288 288" enable-background="new 0 0 288 288" xml:space="preserve">
+  <circle fill="none" stroke="#898989" stroke-width="15" cx="144.059" cy="144" r="117"/>
+  <g fill="#898989">
+    <path d="M144.057,198.576c-2.407,0-4.82-0.892-6.694-2.675l-50.553-48.13c-2.878-2.737-3.797-6.951-2.321-10.642 c1.474-3.685,5.045-6.103,9.016-6.103h18.604V77.015c0-5.366,4.348-9.711,9.711-9.711h44.475c5.365,0,9.713,4.345,9.713,9.711 v54.012h18.603c3.972,0,7.544,2.418,9.019,6.103c1.475,3.691,0.556,7.905-2.321,10.642l-50.555,48.13 C148.877,197.685,146.464,198.576,144.057,198.576L144.057,198.576z"/>
+    <path d="M178.219,213.991c0,3.054-2.477,5.529-5.53,5.529h-57.261c-3.054,0-5.53-2.476-5.53-5.529l0,0c0-3.055,2.476-5.53,5.53-5.53 h57.261C175.742,208.461,178.219,210.937,178.219,213.991L178.219,213.991z"/>
+  </g>
+</svg>

it4i_theme/header.html

@@ -23,7 +23,7 @@
       </div>
     </div>
       <div class="button button-twitter" role="button" aria-label="Twitter">
-        <a href="all.pdf" title="DOWNLOAD PDF VERSION" target="_blank"><img src="/img/git.png" width="30" height="30"></a>
+        <a href="all.pdf" title="DOWNLOAD PDF VERSION" target="_blank"><img src="/img/download.png" width="30" height="30"></a>
       </div>
       <div class="button button-github" role="button" aria-label="GitHub">
         <a href="https://gitlab.it4i.cz/kru0052/docs.it4i" title="on GitLab" target="_blank" ><img src="/img/git.png" width="30" height="30"></a>