Added a copy of Firebug Lite for debugging purposes. License is uncertain but being treated as MPL. (If is is not MPL then it is under something more permissive that permits relicensing anyway)
tinyMCE.addI18n('en.style_dlg',{
title:"Edit CSS Style",
apply:"Apply",
text_tab:"Text",
background_tab:"Background",
block_tab:"Block",
box_tab:"Box",
border_tab:"Border",
list_tab:"List",
positioning_tab:"Positioning",
text_props:"Text",
text_font:"Font",
text_size:"Size",
text_weight:"Weight",
text_style:"Style",
text_variant:"Variant",
text_lineheight:"Line height",
text_case:"Case",
text_color:"Color",
text_decoration:"Decoration",
text_overline:"overline",
text_underline:"underline",
text_striketrough:"strikethrough",
text_blink:"blink",
text_none:"none",
background_color:"Background color",
background_image:"Background image",
background_repeat:"Repeat",
background_attachment:"Attachment",
background_hpos:"Horizontal position",
background_vpos:"Vertical position",
block_wordspacing:"Word spacing",
block_letterspacing:"Letter spacing",
block_vertical_alignment:"Vertical alignment",
block_text_align:"Text align",
block_text_indent:"Text indent",
block_whitespace:"Whitespace",
block_display:"Display",
box_width:"Width",
box_height:"Height",
box_float:"Float",
box_clear:"Clear",
padding:"Padding",
same:"Same for all",
top:"Top",
right:"Right",
bottom:"Bottom",
left:"Left",
margin:"Margin",
style:"Style",
width:"Width",
height:"Height",
color:"Color",
list_type:"Type",
bullet_image:"Bullet image",
position:"Position",
positioning_type:"Type",
visibility:"Visibility",
zindex:"Z-index",
overflow:"Overflow",
placement:"Placement",
clip:"Clip"
});