fix major bugs in Find and Search in Project functionality.

fix case sensitive and regexp search, remove duplicating code

Signed-off-by: Andrey Skvortsov <andrej.skvortzov@gmail.com>

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<?xml version='1.0' encoding='utf-8'?>

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<BeremizRoot URI_location="LOCAL://">

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  <TargetType/>

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</BeremizRoot>