Make full example modules (issue #20)

This version introduces multiple enhancements:

added some examples into template usage
updated translations
added some new examples

Details of additions/deletions below:
--------------------------------------------------------------

Added:      /BLUE_FRAMEWORK/modules/example_layout/layouts/directory/template.html
            -- Added --
                external template for example

Modified:   /BLUE_FRAMEWORK/modules/example_layout/layouts/index.html
            -- Added --
                added some new examples

Modified:   /BLUE_FRAMEWORK/elements/layouts/examples/examples.html
            -- Added --
                added some new examples

Modified:   /BLUE_FRAMEWORK/cfg/lang/core_en-GB.php
            -- Updated --
                translations changes

Modified:   /BLUE_FRAMEWORK/cfg/lang/core_pl-PL.php
            -- Updated --
                translations changes

Modified:   /BLUE_FRAMEWORK/modules/example_layout/lang/example_layout_en-GB.php
            -- Added --
                translations to new examples

Modified:   /BLUE_FRAMEWORK/modules/example_layout/lang/example_layout_pl-PL.php
            -- Added --
                translations to new examples

Modified:   /BLUE_FRAMEWORK/elements/css/styles.css
            -- Added --
                style to code description element

Removed:    /BLUE_FRAMEWORK/modules/example_layout/layouts/external/external.html
            -- Removed --
                removed and replaced by: /BLUE_FRAMEWORK/modules/example_layout/layouts/directory/template.html