Support localization of application error messages

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It would be nice to be able to translate the error messages that may appear on 
application startup when something goes wrong. These messages are currently in 
English and hardcoded in C++ sources. We should create a "locale.json" file and 
put these strings there.

The following errors may appear on application startup that will result in 
application being terminated immediately:

1. Firewall blocked the connection to the local web server.

    FatalError(hwnd, "Error while loading the start page. "
                "An internal local server was blocked by your firewall, "
                "please check your firewall settings. "
                "Application will terminate immediately.");

2. Creating browser control failed - some internal CEF problem.

    FatalError(windowHandle_, "Could not create Browser control.\n"
                    "Exiting application.");

3. PHP binaries or PHP scripts are in a location on hard drive that contains 
unicode characters and this will cause problems as PHP doesn't support unicode 
filenames.

        message << "Application has detected that its files has been placed "
                "in a location on your hard drive that contains unicode "
                "special characters (" << unicodePaths << "). "
                "Due to some limitations this is not allowed. "
                "Application will terminate immediately.\n\n"
                "This kind of problem occurs when your Windows account "
                "name contains non-standard characters. The solution is "
                "to put application directory in a location that contains "
                "only standard set of characters. You may put it to the root "
                "C:\\ directory for example. Application must have permission "
                "to write files in that location, otherwise it is required "
                "to run it as Administrator";
        FatalError(hwnd, message.str().c_str());

4. Error while opening or parsing the settings.json file.

    a) g_applicationSettingsError = "Error while opening the Settings file. ";
    b) g_applicationSettingsError = "Error while parsing the Settings file. ";
    error.append("\nApplication will terminate immediately. ");

5. Starting Mongoose web server failed - some internal mongoose problem.

    FatalError(NULL, "Error while starting an internal local server.\n"
                   "Application will terminate immediately.");

Original issue reported on code.google.com by czarek.t...@gmail.com on 4 Feb 2014 at 10:37

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Original comment by czarek.t...@gmail.com on 21 Oct 2014 at 10:37

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