More hooks!

[dziudek]

• More hooks for the content
• More hooks for the page templates elemets (meta data of the posts, block author etc)
• Move some layout fragments to hooks
• Hooks in the built-in widgets!
• Better hooks documentation (with described params of the hooks)

[dziudek]

• Hooks to change the breadcrumb home text.
• Hooks to change the image logo alt text.

[dziudek]

Was added in GavernWP v.1.7.