Added docs for 8 endpoints and fixed 3 of them

[sse87]

New documentation for following endpoints:

• /calendar
• /carparks
• /cinema
• /declension
• /golf
• /isbolti
• /isnic
• /names

Fixed following endpoints:

• /cinema Source html changed and theater page removed
• /declension Source html attribute changed
• /names $(this) not working in an arrow function`

Improved following endpoints:

• /cinema Added theater metadata
• /carparks Added opening hours
• /names Added more options like get all names or get all declined names

Make docs for other endpoints more consistant.

[sse87]

I'm done adding new stuff to this PR, just fixes if you guys see anything. 😉

[sse87]

So any change of more reviews? I'm still here for comments.

[sse87]

Tests fails because cached test data (mock-data.json) has mismatch or invalid information.

All tests passes after I removed all island.is records from the file or total of 18 items.