Glossary page class

[lebleut]

Create a new page and assign it to the glossary page setting when plugin activated

• Add a settings 'the glossary page' as a drop down to allow the user to pick the page wanted to contain the glossary

like Woocomerce pages (shop, order ...)

[lebleut]

Setting added : https://github.com/lebleut/Tooltipy-OOP/commit/910156e9ca993b00ce613249d9d8db0d9508906a

[lebleut]

Done