Add delete button to the map editor

(cherry picked from commit f820adab51734020600d9758c4b78a1f6585b133)

mods/common/fluent/chrome.ftl

@@ -62,7 +62,7 @@ label-area-selection = Area Selection
 label-area-info = Area Info
 label-selected-area-diagonal = Diagonal:
 label-selected-area-resources = Resources:
-label-copy-filters = Copy Filters
+label-selection-filters = Filters
 label-filter-terrain = Terrain
 label-filter-resources = Resources
 label-filter-actors = Actors
@@ -81,6 +81,9 @@ button-map-editor-tab-container-actors-tooltip = Actors
 button-map-editor-tab-container-tools-tooltip = Tools
 button-map-editor-tab-container-history-tooltip = History
 
+button-delete-area =
+   .label = Delete
+
 button-editor-world-root-options =
    .label = Menu
    .tooltip = Menu

mods/common/fluent/common.ftl

@@ -804,6 +804,7 @@ notification-copied-tiles =
 
 ## EditorDefaultBrush
 notification-selected-area = Selected area { $x },{ $y } ({ $width },{ $height })
+notification-removed-area = Removed area { $x },{ $y } ({ $width },{ $height })
 notification-selected-actor = Selected actor { $id }
 notification-cleared-selection = Cleared selection
 notification-removed-actor = Removed { $name } ({ $id })