simplify FilePtr::checkSize using boost::filesystem::resize_file
in DICOM generate "studyStart" from DICOM tags "StudyTime" and "StudyDate"
some cleanup
fix problem with missing props in Image::getChunksProperties and add Image::getChunksValuesAs
Merge branch 'master' into api_change

Conflicts:
	lib/ImageIO/imageFormat_Dicom.cpp
be more fuzzy when checking the sliceVec
Merge branch 'master' into api_change
remove getBoostVector
add support for qt5