Feature/add slack channel (#363)

* Add Slack channel

* Update changelog

CHANGELOG.md

@@ -5,6 +5,10 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## Unreleased
+
+- Added the Ghostfolio Slack channel to the about page
+
 ## 1.51.0 - 11.09.2021
 
 ### Changed

README.md

@@ -128,7 +128,7 @@ Run `yarn test`
 
 Ghostfolio is **100% free** and **open source**. We encourage and support an active and healthy community that accepts contributions from the public - including you.
 
-Not sure what to work on? We have got some ideas. Please tweet to [@ghostfolio\_](https://twitter.com/ghostfolio_) or send an e-mail to hi@ghostfol.io. We would love to hear from you.
+Not sure what to work on? We have got some ideas. Please join the Ghostfolio [Slack channel](https://join.slack.com/t/ghostfolio/shared_invite/zt-vsaan64h-F_I0fEo5M0P88lP9ibCxFg), tweet to [@ghostfolio\_](https://twitter.com/ghostfolio_) or send an e-mail to hi@ghostfol.io. We would love to hear from you.
 
 ## License
 

apps/client/src/app/pages/about/about-page.html

@@ -32,7 +32,12 @@
           </p>
           <p>
             If you encounter a bug or would like to suggest an improvement or a
-            new feature, please tweet to
+            new feature, please join the Ghostfolio
+            <a
+              href="https://join.slack.com/t/ghostfolio/shared_invite/zt-vsaan64h-F_I0fEo5M0P88lP9ibCxFg"
+              title="Join the Ghostfolio Slack channel"
+              >Slack channel</a
+            >, tweet to
             <a
               href="https://twitter.com/ghostfolio_"
               title="Tweet to Ghostfolio on Twitter"
@@ -65,6 +70,14 @@
             >
               <ion-icon name="mail" size="large"></ion-icon>
             </a>
+            <a
+              class="mx-2"
+              href="https://join.slack.com/t/ghostfolio/shared_invite/zt-vsaan64h-F_I0fEo5M0P88lP9ibCxFg"
+              mat-icon-button
+              title="Join the Ghostfolio Slack channel"
+            >
+              <ion-icon name="logo-slack" size="large"></ion-icon>
+            </a>
             <a
               class="mx-2"
               href="https://github.com/ghostfolio/ghostfolio"