Publish Vulpes Preview 15 sources for desktop, Android and Tundra

Share Gaia assets and adapters, keep private profiles and development documents local, and update both public READMEs.

gaia/tv_apps/smart-system/style/browser_context_menu/browser_context_menu.css

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+smart-button[type="contextmenu"] > .icon {
+  content: attr(data-icon);
+  background-position: center top 4.8rem;
+  background-size: 10rem;
+  background-repeat: no-repeat;
+  left: 0;
+  top: 0;
+  position: absolute;
+  width: 100%;
+  height: 100%;
+}
+
+smart-button[type="contextmenu"].focused:not(.pressed) > .icon {
+  filter: url(invert.svg#invert);
+  opacity: 0.824;
+}
+
+smart-button[type="contextmenu"] {
+  /* position: relative for putting icon at absolute position */
+  position: relative;
+  width: 24rem;
+  height: 24rem;
+  border-radius: 12rem;
+  background-color: #5f5f5f;
+  padding-top: 14.8rem;
+  padding-bottom: 5rem;
+  font-size: 2rem;
+  font-style: italic;
+  text-align: center;
+  color: white;
+  line-height: 2.8rem;
+  box-sizing: border-box;
+}
+
+smart-button[type="contextmenu"].focused {
+  transform: scale(1.2);
+  color: #2d2d2d;
+  background-color: white;
+}
+
+smart-button[type="contextmenu"].pressed {
+  transform: scale(1);
+  background-color: #00caf2;
+  color: white;
+}
+
+smart-button[type="contextmenu"].focused.demo {
+  transform: scale(1.6667); /* scale to 40rem */
+}

gaia/tv_apps/smart-system/style/browser_context_menu/invert.svg

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+<svg xmlns="http://www.w3.org/2000/svg">
+  <filter id="invert">
+    <feColorMatrix in="SourceGraphic" type="matrix" values="-1 0 0 0 1
+                                                            0 -1 0 0 1
+                                                            0 0 -1 0 1
+                                                            0 0  0 1 0"/>
+  </filter>
+</svg>