Cancel button color in analytic tab #423

[VargBurz]

Closes #423 Closes #389

This PR adds UI fixes in analytic tab.

Changes:

• Add space between icon and "Add Analytic unit"

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  • Change "cancel" button color from red to gray

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  • "Add Analytic Unit", "Re-detect all analytic units" and "Show help" buttons in one line

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[jonyrock-back]

good job!