update icons for Stud.IP 5.0, re #55

VipsPlugin.php

@@ -225,15 +225,25 @@ class VipsPlugin extends StudIPPlugin implements StandardPlugin, SystemPlugin, P
         }
 
         $overview_message = $this->getPluginName();
-        $icon = vips_image_url('vips_grey.svg');
+
+        if (version_compare($GLOBALS['SOFTWARE_VERSION'], '5.0', '<')) {
+            $icon = Icon::create(vips_image_url('vips_grey.svg'), 'clickable');
+        } else {
+            $icon = Icon::create(vips_image_url('vips_blue.svg'), 'clickable');
+        }
 
         if ($new_items > 0) {
             $overview_message = sprintf($message, $new_items);
-            $icon = vips_image_url('vips_red.svg');
+
+            if (version_compare($GLOBALS['SOFTWARE_VERSION'], '5.0', '<')) {
+                $icon = Icon::create(vips_image_url('vips_red.svg'), 'new');
+            } else {
+                $icon = Icon::create(vips_image_url('vips_white.svg'), 'new');
+            }
         }
 
         $icon_navigation = new Navigation($this->getPluginName(), $this->url_for('sheets'));
-        $icon_navigation->setImage(Icon::create($icon), ['title' => $overview_message]);
+        $icon_navigation->setImage($icon, ['title' => $overview_message]);
 
         if ($this->isNavigationEnabled($course_id)) {
             return $icon_navigation;

images/vips_blue.svg

+<?xml version="1.0" encoding="utf-8"?>
+<!-- Generator: Adobe Illustrator 16.0.0, SVG Export Plug-In . SVG Version: 6.00 Build 0)  -->
+<!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="Ebene_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"
+	 width="16px" height="16px" viewBox="0 0 16 16" enable-background="new 0 0 16 16" xml:space="preserve">
+<g>
+	<path fill="#24437C" d="M13.67,7.312v6.781c0,1.053-0.862,1.907-1.921,1.907H1.917c-1.058,0-1.921-0.854-1.921-1.907V4.329
+		c0-1.053,0.863-1.908,1.921-1.908h9.832c0.475,0,0.911,0.171,1.244,0.458l-0.982,0.983c-0.076-0.043-0.167-0.067-0.262-0.067H1.917
+		c-0.297,0-0.538,0.24-0.538,0.535v9.764c0,0.296,0.241,0.534,0.538,0.534h9.832c0.297,0,0.54-0.238,0.54-0.534V8.69L13.67,7.312z"
+		/>
+</g>
+<polygon fill="#24437C" points="8.341,11.406 16.005,3.742 14.684,2.422 7.02,10.087 3.902,6.97 2.582,8.29 7.018,12.728 
+	7.02,12.728 7.02,12.728 8.086,11.662 8.341,11.406 "/>
+</svg>