Choosing search engines for search mfm

What does this PR do? (Please give us a brief description of what this PR does.)

When the search mfm is used this allows users to configure one of many presets or set a custom search engine to be used instead of just google

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• 62f54713 - fixing some things

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• d53df1c5 - undid weird / in search engine map

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• f7898fa8 - teach the locale system that sometimes braces are just braces

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mentioned in commit fef64e9c