Merge pull request #3 from leptonverde/master

const ClassName &other. Just added const
Opening not yet existing files (e.g. for uploading new files) is not possible. Dropbox (correctly) returns 404. QDropbox::getFileContent treated this as error.

references #2

Signed-off-by: lycis <daniel@deder.at>
	modified:   src/qdropbox.cpp
	modified:   src/qdropbox.h

D
ed QDropbox::requestSharedLink()