Added voting page & header styling fix

Implemented VoteComponent to allow users to vote for the server on multiple platforms. Updated routes, styles, and headers for consistency.

frontend/src/app/about/about.component.html

@@ -1,5 +1,6 @@
 <ng-container>
-  <app-header [current_page]="'rules'" height="460px" background_image="/public/img/backgrounds/trees.jpg">
+  <app-header [current_page]="'about'" height="460px" background_image="/public/img/backgrounds/trees.jpg"
+              [overlay_gradient]="0.5">
     <div class="title" header-content>
       <h1>About Us</h1>
       <h2>We are a simple server born out of nostalgia, and working to maintain a semi-vanilla feel today's Minecraft