Lots of changes (#1889)

* Add image support to multi-tool page

Related to #278

* changes to support image types

* final touches

* final touches

* final touches

Signed-off-by: a <a>

* final touches

Signed-off-by: a <a>

* final touches

Signed-off-by: a <a>

* final touches

Signed-off-by: a <a>

* final touches

Signed-off-by: a <a>

* final touches

Signed-off-by: a <a>

* final touches

Signed-off-by: a <a>

* Update translation files (#1888)

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Co-authored-by: GitHub Action <action@github.com>

---------

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Signed-off-by: GitHub Action <action@github.com>
Co-authored-by: a <a>
Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
Co-authored-by: GitHub Action <action@github.com>

src/main/java/stirling/software/SPDF/config/security/UserService.java

@@ -11,6 +11,7 @@ import org.springframework.security.authentication.UsernamePasswordAuthenticatio
 import org.springframework.security.core.Authentication;
 import org.springframework.security.core.GrantedAuthority;
 import org.springframework.security.core.authority.SimpleGrantedAuthority;
+import org.springframework.security.core.context.SecurityContextHolder;
 import org.springframework.security.core.session.SessionInformation;
 import org.springframework.security.core.userdetails.UserDetails;
 import org.springframework.security.core.userdetails.UsernameNotFoundException;
@@ -342,4 +343,14 @@ public class UserService implements UserServiceInterface {
             }
         }
     }
+
+    public String getCurrentUsername() {
+        Object principal = SecurityContextHolder.getContext().getAuthentication().getPrincipal();
+
+        if (principal instanceof UserDetails) {
+            return ((UserDetails) principal).getUsername();
+        } else {
+            return principal.toString();
+        }
+    }
 }