Make input in the Web Inspector console print before any output

    Make input in the Web Inspector console print before any output
        that might be added by the called function.

        https://bugs.webkit.org/show_bug.cgi?id=19931

        Reviewed by Oliver Hunt.

        * inspector/front-end/Console.js:
        (WebInspector.Console.prototype._enterKeyPressed): Add the command
        message before evaluating the result. Associate the originating
        command to the result, so if they are adjacent there is no divider.
        (WebInspector.ConsoleCommand): No longer take a result.
        (WebInspector.ConsoleCommand.prototype.toMessageElement): Result
        code removed since it isn't used now.
        (WebInspector.ConsoleCommandResult): Subclass ConsoleMessage.
        (WebInspector.ConsoleCommandResult.prototype.toMessageElement):
        Call the ConsoleMessage toMessageElement and add a style class.
        * inspector/front-end/inspector.css: Add a new style class for
        adjacent results to hide the divider. Also tweak the position of
        the disclosure triangle for objects to not use the left margin.

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@41352 268f45cc-cd09-0410-ab3c-d52691b4dbfc