330 (#250)

* Add deletePageKey method for additional contents plugin
* Add checker if there is any visible subpage
* Update index.php
* Replacing all spaces with tabs.
* Changing update check from 7 days to daily.
* Updating text to show it's updating and that updates aren't checked for on a weekly basis (daily now).
* Fixing URL to changelog.
* Update index.php
* Update caching system with wcms-modules.json
* Add REQUEST_URI to page read
* .htaccess update with new cache files for modules
* Parse wcms-module.json to single cache.json file with custom modules
* Cleanup
* Remove REQUEST_URI
* Rename ThemePlugin to Module
* Copy change
* Update style.css
* Update version
* Add files via upload
* Delete version
* Delete summary

Co-authored-by: Robert Isoski <r@robiso.com>