Localization review/cleanup

[jng]

Review the Maestro codebase for localization related issues:

• Mark lines containing unlocalizable string literals with NOXLATE, making future localizable string hunting easier.
• Move localizable string literals into their respective resx file
• Where possible, externalize frequently used string literals into a string constant of a StringConstants utility class.
• Refactor out any format strings with locale-specific information. (eg. Coordinate position)
• Move strings in Resources.resx into a separate Strings.resx resource, to make such items easier to distinguish during the localization process
• Refactor the file picker filter strings to the form {0}(*.{1})|*.{1} , where {0} is the locale-specific file type and {1} is the extension.