3.9.2.4 Add language style files
Saved in directory of ewebeditor/language/, the language style files are those in "language code"+".css" format. File names are all in lowercase. For example, English is "en.css" and simplified Chinese is "zh-ch.css".
Language style files are mainly used to define every language's interface, dialog box, right-key menu, default size and the font name.
For example, the best English interface character size is 8pt while the best Chinese interface character size is 9pt.