Fix issue #73: improve remote config type ui

[deverestHood]

@cstrnt @CakeWithDivinity The included photo shows the Update Remote Config Modal after making a few changes that create a more obvious visual distinction between selected and deselected fields, and enhance visibility for the currently selected value type.

Please let me know what how else I may be able to help contribute. Thanks!

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[cstrnt]

Thank you very much @deverestHood :) Looking great!