Customize UI to differentiate from Chromium's instance

- Rename "Monorail" in the home page's header to "avm99963 bugs".
- Remove <chops-announcement>.
- Remove Chromium logo from the home page background.
- Add markdown support for the vulnz and vulnz-old projects.

GitOrigin-RevId: 57bcf549c1eb7c383d25e6a4790c90337d396e91
diff --git a/static_src/elements/framework/mr-header/mr-header.js b/static_src/elements/framework/mr-header/mr-header.js
index 6603c85..be6afad 100644
--- a/static_src/elements/framework/mr-header/mr-header.js
+++ b/static_src/elements/framework/mr-header/mr-header.js
@@ -198,7 +198,7 @@
       </a>
       ${this._headerTitle ?
           html`<span class="home-link">${this._headerTitle}</span>` :
-          html`<a href="/" class="home-link">Monorail</a>`}
+          html`<a href="/" class="home-link">avm99963 bugs</a>`}
 
       <div class="right-section">
         ${this._renderAccount()}
diff --git a/static_src/elements/mr-app/mr-app.js b/static_src/elements/mr-app/mr-app.js
index a48d40f..c91511f 100644
--- a/static_src/elements/mr-app/mr-app.js
+++ b/static_src/elements/mr-app/mr-app.js
@@ -20,7 +20,6 @@
 import * as sitewide from 'reducers/sitewide.js';
 import {arrayToEnglish} from 'shared/helpers.js';
 import {trackPageChange} from 'shared/ga-helpers.js';
-import 'elements/chops/chops-announcement/chops-announcement.js';
 import 'elements/issue-list/mr-list-page/mr-list-page.js';
 import 'elements/issue-entry/mr-issue-entry-page.js';
 import 'elements/framework/mr-header/mr-header.js';
@@ -84,7 +83,6 @@
         .loginUrl=${this.loginUrl}
         .logoutUrl=${this.logoutUrl}
       ></mr-header>
-      <chops-announcement service="monorail"></chops-announcement>
       <mr-site-banner></mr-site-banner>
       <mr-cue
         cuePrefName=${cueNames.SWITCH_TO_PARENT_ACCOUNT}
diff --git a/static_src/elements/projects/mr-projects-page/mr-projects-page.js b/static_src/elements/projects/mr-projects-page/mr-projects-page.js
index 1124ef0..df0c823 100644
--- a/static_src/elements/projects/mr-projects-page/mr-projects-page.js
+++ b/static_src/elements/projects/mr-projects-page/mr-projects-page.js
@@ -36,20 +36,6 @@
           max-width: 1280px;
           width: 100%;
         }
-        :host::after {
-          content: "";
-          background-image: url('/static/images/chromium.svg');
-          background-repeat: no-repeat;
-          background-position: right -100px bottom -150px;
-          background-size: 700px;
-          opacity: 0.09;
-          width: 100%;
-          height: 100%;
-          bottom: 0;
-          right: 0;
-          position: fixed;
-          z-index: -1;
-        }
         h2 {
           font-size: 20px;
           letter-spacing: 0.1px;
diff --git a/static_src/shared/md-helper.js b/static_src/shared/md-helper.js
index da5ac3c..8f90676 100644
--- a/static_src/shared/md-helper.js
+++ b/static_src/shared/md-helper.js
@@ -2,7 +2,7 @@
 import DOMPurify from 'dompurify';
 
 /** @type {Set} Projects that default Markdown rendering to true. */
-export const DEFAULT_MD_PROJECTS = new Set(['monkeyrail', 'monorail', 'fuchsia']);
+export const DEFAULT_MD_PROJECTS = new Set(['vulnz', 'vulnz-old', 'monkeyrail', 'monorail']);
 
 /** @type {Set} Projects that allow users to opt into Markdown rendering. */
 export const AVAILABLE_MD_PROJECTS = new Set([...DEFAULT_MD_PROJECTS]);