Task/improve language localization for DE (20261006) (#8075)

* Update translations

* Update changelog

CHANGELOG.md

@@ -10,6 +10,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Changed
 
 - Moved the performance calculation including dividends (total return) from experimental to general availability
+- Improved the language localization for German (`de`)
 
 ### Fixed
 

apps/client/src/locales/messages.de.xlf

@@ -4331,7 +4331,7 @@
       </trans-unit>
       <trans-unit id="5176578390795646240" datatype="html">
         <source>thereof Dividend Performance</source>
-        <target state="new">thereof Dividend Performance</target>
+        <target state="translated">davon Dividenden Performance</target>
         <context-group purpose="location">
           <context context-type="sourcefile">apps/client/src/app/components/portfolio-summary/portfolio-summary.component.html</context>
           <context context-type="linenumber">178</context>
@@ -7418,7 +7418,7 @@
       </trans-unit>
       <trans-unit id="7803225195017107428" datatype="html">
         <source>thereof Dividend</source>
-        <target state="new">thereof Dividend</target>
+        <target state="translated">davon Dividenden</target>
         <context-group purpose="location">
           <context context-type="sourcefile">apps/client/src/app/components/portfolio-summary/portfolio-summary.component.html</context>
           <context context-type="linenumber">102</context>
@@ -9153,7 +9153,7 @@
       </trans-unit>
       <trans-unit id="5814001514445505929" datatype="html">
         <source>Return on Average Investment (total return with dividends)</source>
-        <target state="new">Return on Average Investment (total return with dividends)</target>
+        <target state="translated">Rendite auf die durchschnittliche Investition (Gesamtrendite inklusive Dividenden)</target>
         <context-group purpose="location">
           <context context-type="sourcefile">apps/client/src/app/components/portfolio-summary/portfolio-summary.component.html</context>
           <context context-type="linenumber">159</context>