Most components do not fit inside standard cell size

[vaadin-bot]

Originally by @tmattsso

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When adding e.g. a Button, the bottom of the button is cut off since it won't fit into a cell. Should we automatically resize those rows that contain components? The issue is present with both Rows and Editors.

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Imported from https://dev.vaadin.com/ issue #16467

[vaadin-bot]

Originally by @tepi

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Review at https://dev.vaadin.com/review/7865

The fix should give enough height for most common vaadin components, and handle the width issue of buttons by adding ellipsis for caption text overflow.

Nothing is done for the widths so a too-wide field is still a problem.

[vaadin-bot]

Originally by @tepi

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We could recommend that one should use 100% width for fields. I made this change into SpreadsheetDemoUI in the test folder and this seems to fix the width issue in most cases.