UI wrapper class refactor

[ercanozkaya]

• Add Joomla page suffix class to the wrapper in ComKoowaTemplateHelperUi
• Rename koowa to k-ui-namespace
• Make sure k-ui-namespace can be used on any element.
• Rename koowa-container to k-ui-container

See: https://support.joomlatools.com/forums/topic/6689#comment-35918

[robinpoort]

@ercanozkaya I did the work in branches in the repositories you can see referenced above.

I didn't touch joomlatools-todo yet. We can do that in one go when finishing up the UI there. See: joomlatools/joomlatools-todo#11

I've looked through the entire codebase and changed every koowa instance I was sure of that it'd was there for the namespace purpose. I think it'd be wise if you could thoroughly look through the changes and check the repositories to see if I missed stuff.

I wasn't sure about the following koowa instances:

• joomlatools-framework/autoload.php:36
• joomlatools-framework/code/libraries/joomlatools/component/koowa/dispatcher/response/transport/http.php:34
• joomlatools-framework/code/libraries/joomlatools/component/koowa/dispatcher/response/transport/http.php:38
• joomlatools-framework/code/libraries/joomlatools/component/koowa/template/filter/version.php:97
• joomlatools-framework/code/libraries/joomlatools/library/class/registry/cache.php:23
• joomlatools-framework/code/libraries/joomlatools/library/filesystem/stream/factory.php:60
• joomlatools-framework/code/libraries/joomlatools/library/object/locator/abstract.php:70
• joomlatools-framework/code/libraries/joomlatools/library/object/manager/manager.php:104
• joomlatools-framework/code/libraries/joomlatools/library/object/registry/cache.php:23
• joomlatools-framework/code/libraries/joomlatools/library/template/cache.php:23
• joomlatools-framework/code/libraries/joomlatools/library/template/template.php:88
• joomlatools-framework/code/libraries/joomlatools/library/user/session/abstract.php:136
• joomlatools-framework/code/plugins/system/joomlatools/joomlatools.php:123