Stylin:

* change css styleclass of dialogue headings to `label-large`
* remove newly introduced style class `label-medium`

main/ui/src/main/resources/css/dark_theme.css

@@ -105,11 +105,6 @@
 	-fx-font-size: 1.5em;
 }
 
-.label-medium {
-	-fx-font-family: 'Open Sans SemiBold';
-	-fx-font-size: 1.2em;
-}
-
 .label-small {
 	-fx-font-size: 0.8em;
 }

main/ui/src/main/resources/css/light_theme.css

@@ -105,11 +105,6 @@
 	-fx-font-size: 1.5em;
 }
 
-.label-medium {
-	-fx-font-family: 'Open Sans SemiBold';
-	-fx-font-size: 1.2em;
-}
-
 .label-small {
 	-fx-font-size: 0.8em;
 }

main/ui/src/main/resources/fxml/lock_failed.fxml

@@ -26,7 +26,7 @@
 				<FontAwesome5IconView styleClass="glyph-icon-white" glyph="TIMES" glyphSize="24"/>
 			</StackPane>
 			<VBox spacing="6">
-				<Label styleClass="label-medium" text="%lock.fail.heading"/>
+				<Label styleClass="label-large" text="%lock.fail.heading"/>
 				<FormattedLabel format="%lock.fail.message" arg1="${controller.vaultName}" wrapText="true"/>
 			</VBox>
 		</HBox>

main/ui/src/main/resources/fxml/lock_forced.fxml

@@ -27,7 +27,7 @@
 				<FontAwesome5IconView styleClass="glyph-icon-white" glyph="EXCLAMATION" glyphSize="24"/>
 			</StackPane>
 			<VBox spacing="6">
-				<Label styleClass="label-medium" text="%lock.forced.heading"/>
+				<Label styleClass="label-large" text="%lock.forced.heading"/>
 				<FormattedLabel format="%lock.forced.message" arg1="${controller.vaultName}" wrapText="true"/>
 			</VBox>
 		</HBox>