Bugfix - Fetch all pages unless limit is set

[aamorin]

Pull Request Check List

Resolves: #issue-number-here

• [ ] Added tests for changed code.
• [ ] Updated documentation for changed code.

Description:

Riven is only fetching the first 10 items of any Trakt collections/lists/watchlist:

24-06-18 15:49:02 | 🎵 TRAKT     | trakt.run - New items fetched from Watchlist: 10
24-06-18 15:49:02 | 🎵 TRAKT     | trakt.run - New items fetched from User Lists: 10
24-06-18 15:49:02 | 🎵 TRAKT     | trakt.run - Total new items fetched: 20

Now it is fetching all of the items if params.limit is not set:

24-06-18 17:02:28 | 🎵 TRAKT     | trakt.run - New items fetched from Watchlist: 14
24-06-18 17:02:28 | 🎵 TRAKT     | trakt.run - New items fetched from User Lists: 25
24-06-18 17:02:28 | 🎵 TRAKT     | trakt.run - Total new items fetched: 39