Minor CSS & Link Updates

Also updated dist files with new CSS

frontend/src/features/gallery/CurrentImageDisplay.scss

@@ -71,7 +71,7 @@
 .next-prev-button-trigger-area {
   width: 7rem;
   height: 100%;
-  width: 100%;
+  width: 15%;
   display: grid;
   align-items: center;
   pointer-events: auto;

frontend/src/features/system/SiteHeader.scss

@@ -21,7 +21,7 @@
 
 .site-header-right-side {
   display: grid;
-  grid-template-columns: repeat(6, max-content);
+  grid-template-columns: repeat(7, max-content);
   align-items: center;
   column-gap: 0.5rem;
 }

frontend/src/features/system/SiteHeader.tsx

@@ -1,7 +1,7 @@
 import { IconButton, Link, Tooltip, useColorMode } from '@chakra-ui/react';
 import { useHotkeys } from 'react-hotkeys-hook';
 
-import { FaSun, FaMoon, FaGithub } from 'react-icons/fa';
+import { FaSun, FaMoon, FaGithub, FaDiscord } from 'react-icons/fa';
 import { MdHelp, MdKeyboard, MdSettings } from 'react-icons/md';
 
 import InvokeAILogo from '../../assets/images/logo.png';
@@ -70,7 +70,7 @@ const SiteHeader = () => {
             icon={
               <Link
                 isExternal
-                href="http://github.com/lstein/stable-diffusion/issues"
+                href="http://github.com/invoke-ai/InvokeAI/issues"
               >
                 <MdHelp />
               </Link>
@@ -85,13 +85,27 @@ const SiteHeader = () => {
             fontSize={20}
             size={'sm'}
             icon={
-              <Link isExternal href="http://github.com/lstein/stable-diffusion">
+              <Link isExternal href="http://github.com/invoke-ai/InvokeAI">
                 <FaGithub />
               </Link>
             }
           />
         </Tooltip>
 
+        <Tooltip hasArrow label="Discord" placement={'bottom'}>
+          <IconButton
+            aria-label="Link to Discord Server"
+            variant="link"
+            fontSize={20}
+            size={'sm'}
+            icon={
+              <Link isExternal href="https://discord.gg/ZmtBAhwWhy">
+                <FaDiscord />
+              </Link>
+            }
+          />
+        </Tooltip>
+
         <Tooltip hasArrow label="Theme" placement={'bottom'}>
           <IconButton
             aria-label="Toggle Dark Mode"