Moved the add and import buttons of the settings dialogs into their footer (#1060)

Co-authored-by: Thorsten Sommer <SommerEngineering@users.noreply.github.com>

app/MindWork AI Studio/wwwroot/changelog/v26.10.1.md

@@ -44,6 +44,7 @@
 - Improved the organization-wide management of the app settings. IT departments can now also set whether AI Studio saves energy while the AI writes its answers, which helps on virtual desktops, for example.
 - Improved attaching files to a chat. You can now attach any file that contains readable text, for example, program code or configuration files of a kind AI Studio did not know before.
 - Improved adding a local data source when you have not configured an embedding provider yet. Until now, you only found out when saving the dialog, after filling in everything else. The data source settings now tell you right away and let you add an embedding provider right there, without losing what you entered.
+- Improved the dialogs for managing your data sources, profiles, and chat templates, which you open, for example, from a chat. The buttons for adding and importing now stay at the bottom of the dialog, so you no longer need to scroll past a long list to reach them. Thanks, Paul Koudelka (`PaulKoudelka`), for this contribution.
 - Changed the banner on the start page to a fresh design that shows what AI Studio can do today.
 - Fixed a warning about the confidence level that stayed in the dialog for adding a local data source, even after you chose an embedding provider that meets it. The dialog now checks again whenever you change either of them, so a warning also appears when you switch to a provider that falls short.
 - Fixed the list of data sources squeezing their names into a very narrow column when you opened it from a chat or from the background embeddings page, so the names were hard to read.