Merge branch '511-compile-error-because-of-bad-character-in-messageba…

…nner' into 'master'

Resolve "Compile Error because of bad character in MessageBanner"

Closes #511

See merge request bright-giant/sirius/sirius-frontend!221

sirius_gui/src/main/java/de/unijena/bioinf/ms/gui/utils/MessageBanner.java

@@ -9,7 +9,7 @@ public enum BannerType {GOOD, INFO, WARNING, ERROR}
     public MessageBanner(String message, BannerType bannerType) {
         super(message);
         setBorder(BorderFactory.createEmptyBorder(3, GuiUtils.SMALL_GAP, 3, GuiUtils.SMALL_GAP));
-`        setOpaque(true);
+        setOpaque(true);
 
         switch (bannerType) {
             case GOOD -> setBackground(Colors.GOOD_IS_GREEN_PALE); //todo change to text green later