A few usability improvements when using Queries#50

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razyalov wants to merge 2 commits intocodefoxes:masterfrom

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Commits on Apr 22, 2018

Add a new setting to allow users to choose between `on` and `once` for how the query is being executed (to avoid the UI changing after data has been updated)
razyalov
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Reflect the selected firebase database in the title and the Window menu options
razyalov
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