added Visit SymbolHub button

Author: CaffeineSheep

resources/sass/_header.scss

@@ -267,6 +267,12 @@ header .search-box.search-active:focus-within {
 
 
 
+@include smaller-than($xl) {
+  #symbolhub-btn {
+    display: none;
+  }
+}
+
 @include smaller-than($l) {
   #blog-btn {
     display: none;

resources/views/common/header.blade.php

@@ -14,6 +14,8 @@
             <a target="_blank" rel="noopener noreferrer" href="https://decodingsymbols.wordpress.com/blog/"
             id="blog-btn" class="btn-special">Visit<br />Blog</a>
 
+            <a href="{{ env('TASK_MANAGER_URL', null) }}" id="symbolhub-btn" class="btn-special">Visit<br />SymbolHub</a>
+
             @if (userCan('page-create', \BookStack\Entities\Models\Book::getBySlug('drafts', true)))
                 <a href="{{ url('/books/drafts/create-page') }}" class="btn-special">+ Draft</a>
             @endif