(core) Adding tutorial card

Summary:
For now only html stub and docList adjustement for showing a tutorial card.
It will be used in future diffs after tutorial implementation.

Test Plan: Manual

Reviewers: georgegevoian

Reviewed By: georgegevoian

Differential Revision: https://phab.getgrist.com/D3750

static/ui-icons/UI/Board.svg

@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16"><g transform="translate(0 0)"><g stroke-width="1" stroke-linejoin="round" fill="none" stroke="#262633" stroke-linecap="round" class="nc-icon-wrapper"><rect x=".5" y=".5" width="15" height="15" rx="1"></rect><path stroke="#262633" d="M3.5 3.5h3v3h-3z"></path><path stroke="#262633" d="M3.5 9.5h3v3h-3z"></path><path stroke="#262633" d="M9.5 3.5h3v9h-3z"></path></g></g></svg>

static/ui-icons/UI/Bookmark.svg

@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16"><g transform="translate(0 0)"><g stroke-width="1" stroke-linejoin="round" fill="none" stroke="#262633" stroke-linecap="round" class="nc-icon-wrapper"><path data-cap="butt" stroke="#262633" d="M8.5.5v7L6 5.5l-2.5 2v-7"></path><path d="M.5 14V2.5a2 2 0 0 1 2-2h11a2 2 0 0 1 2 2V14" data-cap="butt"></path><rect x=".5" y="12.5" width="15" height="3" rx="1.5" ry="1.5" data-cap="butt"></rect></g></g></svg>

static/ui-icons/UI/GreenArrow.svg

@@ -0,0 +1,3 @@
+<svg width="94" height="12" viewBox="0 0 94 12" fill="none" xmlns="http://www.w3.org/2000/svg">
+<path d="M94 6L84 0.226497V11.7735L94 6ZM0 7H4.7V5H0V7ZM14.1 7H23.5V5H14.1V7ZM32.9 7H42.3V5H32.9V7ZM51.7 7H61.1V5H51.7V7ZM70.5 7H79.9V5H70.5V7Z" fill="#16B378"/>
+</svg>

static/ui-icons/UI/RemoveBig.svg

@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   width="16px"
+   height="16px"
+   viewBox="0 0 16 16"
+   version="1.1"
+   id="svg8">
+  <!-- Generator: Sketch 52.5 (67469) - http://www.bohemiancoding.com/sketch -->
+  <title
+     id="title2">Icons / UI / Remove</title>
+  <desc
+     id="desc4">Created with Sketch.</desc>
+  <g
+     id="Icons-/-UI-/-Remove"
+     stroke-width="1"
+     stroke="none"
+     fill-rule="evenodd"
+     fill="none">
+    <path
+       d="M 5.4814711,4 5.4984203,1.059322 C 5.5000119,0.78318422 5.7213294,0.55932203 5.9963017,0.55932203 H 10.19893 c 0.274972,0 0.499472,0.22386219 0.497881,0.49999997 L 10.679862,4 15.352977,3.9830508 c 0.274971,-9.973e-4 0.497881,0.2238576 0.497881,0.5 0,0.2761424 -0.222909,0.4996837 -0.497881,0.5 L 0.61977768,5 C 0.34480558,5.0003163 0.12189639,4.7761424 0.12189639,4.5 c 0,-0.2761424 0.222909,-0.5 0.49788129,-0.5 z M 6.4772338,4 H 9.684099 L 9.7010482,1.559322 H 6.494183 Z m 5.5298472,3.6269514 c -3.98e-4,-0.2761421 0.222909,-0.5 0.497881,-0.5 0.274973,0 0.497482,0.223858 0.497882,0.5 l 0.0092,6.3462406 c 0.0012,0.828426 -0.668728,1.5 -1.493644,1.5 H 4.4624126 c -0.8249168,0 -1.4924496,-0.671574 -1.493644,-1.5 l -0.00915,-6.3462406 c -3.981e-4,-0.2761421 0.2229091,-0.5 0.4978813,-0.5 0.2749723,0 0.4974833,0.2238579 0.4978814,0.5 l 0.00915,6.3462406 c 3.981e-4,0.276141 0.2229091,0.5 0.4978813,0.5 h 7.0559404 c 0.274972,0 0.498279,-0.223859 0.497881,-0.5 z"
+       id="Combined-Shape"
+       style="fill:#000000;fill-rule:nonzero;stroke-width:0.99787909"/>
+  </g>
+</svg>