DLG_FPICKER_EXPLORERFILE conversion to .ui

Change-Id: I5d8f5d0182fb6af5111b60caa29912d313c2efa0
DBG_ASSERT->assert

Change-Id: I977e65d15970a523a28076949544fd846e68ec0a
rework resize into a custom widget

so that the order of resizing will happen in the right sequence
to work correctly every time

Change-Id: I1adffe276db3fb80eb34ca74c2ceb51a6ee28526
tweak helpids now

Change-Id: I2ab7255f634d626cf34ec9f1dcb19d5f24db1c09
Resolves: fdo#80681 widget is not transparent

regression from 12dfca2ea61116665a7abefd43a9a4caa2b8920b
Author: Armin Le Grand <alg@apache.org>
Date:   Mon May 14 15:16:00 2012 +0000
    Resolves: #i119307# added deletion of sw's BmpWindow control...
    ...due to the fact that graphics may be transparent

Change-Id: I7eb2ee8ed53f0ef907a4573a735c71de43b6e8d3