removed lines set size lines and tweaked ui so that settings is fixed on maemo

# Please enter the commit message for your changes. Lines starting
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# On branch master
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# Changes to be committed:
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#	modified:   src/Imap/Model/Model.cpp
#	modified:   src/MaemoGui/SettingsCachePage.ui
#	modified:   src/MaemoGui/SettingsDialog.cpp
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#	build-stamp
#	builddir/
#	debian/
#	trojita.kdev4
