How-tos and development documentation

[ajsb85]

Hi, @Naylin15

Change the name "Wiki" to "How-tos" and add these articles; and add the sub menu items to the Development section. If these pages does not exist, please, create an issue and request it. 👍

How-tos

• [x] How to install
• [x] How to use
• [x] Use Cases
• [x] How it works
• [x] How to contribute
• [x] How to Translate

Development

• [x] Code documentation
• [x] Code coverage
• [x] Test report