Feature/localize content of about page (#5436)

* Localize content of about page

* Update changelog

CHANGELOG.md

@@ -9,6 +9,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Changed
 
+- Localized the content of the about page
 - Upgraded `yahoo-finance2` from version `3.6.4` to `3.8.0`
 
 ## 2.195.0 - 2025-08-29

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

@@ -6,10 +6,13 @@
       </h1>
       <div class="about-container">
         <p>
-          Ghostfolio is a lightweight wealth management application for
-          individuals to keep track of stocks, ETFs or cryptocurrencies and make
-          solid, data-driven investment decisions. The source code is fully
-          available as
+          <ng-container i18n
+            >Ghostfolio is a lightweight wealth management application for
+            individuals to keep track of stocks, ETFs or cryptocurrencies and
+            make solid, data-driven investment decisions.</ng-container
+          >
+          <ng-container i18n>
+            The source code is fully available as
             <a
               href="https://github.com/ghostfolio/ghostfolio"
               title="Find Ghostfolio on GitHub"
@@ -20,15 +23,20 @@
               href="https://www.gnu.org/licenses/agpl-3.0.html"
               title="GNU Affero General Public License"
               >AGPL-3.0 license</a
+            ></ng-container
           >
           @if (hasPermissionForStatistics) {
+            <ng-container i18n>
               and we share aggregated
               <a title="Open Startup" [routerLink]="routerLinkOpenStartup"
                 >key metrics</a
               >
-            of the platform’s performance
+              of the platform’s performance</ng-container
+            >
           }
-          . The project has been initiated by
+          .
+          <ng-container i18n
+            >The project has been initiated by
             <a href="https://dotsilver.ch" title="Website of Thomas Kaul"
               >Thomas Kaul</a
             >
@@ -37,15 +45,19 @@
               href="https://github.com/ghostfolio/ghostfolio/graphs/contributors"
               title="Contributors to Ghostfolio"
               >contributors</a
-          >.
+            >.</ng-container
+          >
           @if (hasPermissionForSubscription) {
+            <ng-container i18n>
               Check the system status at
               <a href="https://status.ghostfol.io" title="Ghostfolio Status"
                 >status.ghostfol.io</a
-            >.
+              >.</ng-container
+            >
           }
         </p>
         <p>
+          <ng-container i18n>
             If you encounter a bug or would like to suggest an improvement or a
             new
             <a [routerLink]="routerLinkFeatures">feature</a>, please join the
@@ -60,20 +72,26 @@
               href="https://x.com/ghostfolio_"
               title="Post to Ghostfolio on X (formerly Twitter)"
               >&#64;ghostfolio_</a
+            ></ng-container
           >
           @if (user?.subscription?.type === 'Premium') {
-            , send an e-mail to
+            ,
+            <ng-container i18n
+              >send an e-mail to
               <a href="mailto:hi@ghostfol.io" title="Send an e-mail"
                 >hi&#64;ghostfol.io</a
+              ></ng-container
             >
           }
+          <ng-container i18n>
             or start a discussion at
             <a
               href="https://github.com/ghostfolio/ghostfolio"
               i18n-title
               title="Find Ghostfolio on GitHub"
               >GitHub</a
-          >.
+            >.</ng-container
+          >
         </p>
         <p class="align-items-center d-flex justify-content-center">
           <a