Enable Automatic Goto in search (mayby via checkbox)

[Benny Bech]

When searching it sometimes helps, if editor automaticly shows the selected item from the search results.
Moving the selected item keyboard (up or down arrow) or clicking on it should select the same item in the module edit, like tracking api from an application.

[Anders@Melander]

Enjoy

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[Anders Melander]

Added Search dialog option to synchronize search result selection and editor selection. Search progress update is now rate limited, which greatly decreases the search time. Fixes #28

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