Add translation variables for image handling in musdb

backend/ar/image_incha.json

@@ -56,7 +56,36 @@
         "global_max_file_uploads": "Overall, the maximum number of images that can be uploaded in one go is",
         "image_upload_page_title": "Image upload form",
         "master_filename": "Name of master file",
-        "master_filename_explica": "The name of the masterfile including the file extension but without the filepath"
+        "master_filename_explica": "The name of the masterfile including the file extension but without the filepath",
+        "color": "Color",
+        "orientation": "Orientation",
+        "image_size": "Image size",
+        "minimum_width": "Minimum width",
+        "maximum_width": "Maximum width",
+        "minimum_height": "Minimum height",
+        "maximum_height": "Maximum height",
+        "orientation_landscape": "Landscape",
+        "orientation_square": "Square",
+        "orientation_portrait": "Portrait",
+        "rotate_left": "Rotate counterclockwise",
+        "rotate_right": "Rotate clockwise",
+        "dominant_color": "Dominant color",
+        "color_black": "black",
+        "color_green": "green",
+        "color_silver": "silver",
+        "color_lime": "lime",
+        "color_gray": "gray",
+        "color_olive": "olive",
+        "color_white": "white",
+        "color_yellow": "yellow",
+        "color_maroon": "maroon",
+        "color_navy": "navy",
+        "color_red": "red",
+        "color_blue": "blue",
+        "color_purple": "purple",
+        "color_teal": "teal",
+        "color_fuchsia": "fuchsia",
+        "color_aqua": "aqua"
     },
     "incha_image": {
         "front": "Front view",