Add better looking checkboxes (#6)

src/vikunja.scss

@@ -98,6 +98,10 @@ h1,h2,h3,h4,h5,h6{
       width: 96%;
       display: inline-block;
       cursor: pointer;
+
+      .tasktext {
+        vertical-align: top;
+      }
     }
 
     input[type="checkbox"] {
@@ -176,4 +180,62 @@ h1,h2,h3,h4,h5,h6{
       border-width: 0.25em;
     }
   }
+}
+
+// Fancy Checkboxes
+.fancycheckbox {
+  display: inline-block;
+  padding-right: 5px;
+  padding-top: 3px;
+
+  .check {
+    cursor: pointer;
+    position: relative;
+    margin: auto;
+    width: 18px;
+    height: 18px;
+    -webkit-tap-highlight-color: transparent;
+    transform: translate3d(0, 0, 0);
+
+    &:hover svg {
+      stroke: $primary;
+    }
+
+    svg {
+      position: relative;
+      z-index: 1;
+      fill: none;
+      stroke-linecap: round;
+      stroke-linejoin: round;
+      stroke: #c8ccd4;
+      stroke-width: 1.5;
+      transform: translate3d(0, 0, 0);
+      transition: all 0.2s ease;
+
+      path {
+        stroke-dasharray: 60;
+        stroke-dashoffset: 0;
+      }
+
+      polyline {
+        stroke-dasharray: 22;
+        stroke-dashoffset: 66;
+      }
+    }
+  }
+
+  input[type=checkbox]:checked + .check svg {
+    stroke: $primary;
+  }
+
+  input[type=checkbox]:checked + .check svg path {
+    stroke-dashoffset: 60;
+    transition: all 0.3s linear;
+  }
+
+  input[type=checkbox]:checked + .check svg polyline {
+    stroke-dashoffset: 42;
+    transition: all 0.2s linear;
+    transition-delay: 0.15s;
+  }
 }