Display a warning if a document consists of multiple pages

[ErkanBasar]

Summary

Currently, the FLAT can be configured to limit the number of sentences/paragraphs loaded at once. If a document is longer than the limit, it is sliced into multiple pages which can be navigated via the page dropdown on the top-left of the editor view.

Problem

The page is too small and the total number of pages are not displayed anywhere. So, after the first page is annotated, the rest of the pages are easy to be missed by the annotators (especially if they are not familiar with FLAT).
Additionally, setting the limit too high (e.g. 500 paragraphs) causes FLAT to slice the document at an arbitrary point (e.g. middle of a sentence) and does not display the rest of the document.

Solution Ideas

• A visible warning that basically says "There are more than one pages, please switch to the next one." can be placed at the end of each page.
• A Next Page > button can be placed at the bottom of the document to directly navigate to the next pages, if there are any.