Make full example modules (issue #20)

This version introduces multiple enhancements:

finished example with templates and layouts

Details of additions/deletions below:
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Added:      /BLUE_FRAMEWORK/modules/example_layout/layouts/additional_template.html
            -- Added --
                additional template example

Modified:   /BLUE_FRAMEWORK/modules/example_layout/example_layout.php
            -- Added --
                _additionalDisplayClass to create display_class instance
                _baseDisplayClass to show base additional template
                _operatingDisplayClass to show base additional template after operations
            -- Updated --
                run to lunch examples

Modified:   /BLUE_FRAMEWORK/modules/example_layout/layouts/index.html
            -- Added --
                examples structure

Modified:   /BLUE_FRAMEWORK/modules/example_layout/lang/example_layout_en-GB.php
            -- Added --
                example translations

Modified:   /BLUE_FRAMEWORK/modules/example_layout/lang/example_layout_pl-PL.php
            -- Added --
                example translations