19.10 outstanding screenshots

[Nadia-JSch]

Adds the light and dark screenshot pairs that were outstanding from the 19.10 release PR, now that a 19.10 environment is available.

Jira issue	Description
60987	Add Display on Screen actions screenshot
61026	Replace temporary advanced filter images with themed pairs
60989	Add Business Services column screenshot
60990	Add Critical Business Service impact screenshot

Notes

• The two temporary single-theme images (advanced-filter-match-any.png and advanced-filter-date-between.png) are deleted and replaced by ThemedImage pairs.
• The release PR suggested reusing the Business Services column image in Explore Existing Business Services. It was not reused: that section covers the Applications > Business Services list page, while the screenshot shows the Devices list page, so it would not match the surrounding text. A cross-link could be added there instead if wanted.

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