Designer: Pass strings by reference
Designer: Pass strings by reference

Change-Id: I86395393f5b79a2ade99e4422453bec5395d2898
Reviewed-by: Nikolai Kosjar <9571db158ca61a0d070db010803474231fa0cbab@digia.com>

martyone/sailfish-qtcreator,kuba1/qtcreator,amyvmiwei/qt-creator,AltarBeastiful/qt-creator,farseerri/git_code,xianian/qt-creator,danimo/qt-creator,danimo/qt-creator,AltarBeastiful/qt-creator,AltarBeastiful/qt-creator,farseerri/git_code,xianian/qt-creator,danimo/qt-creator,maui-packages/qt-creator,martyone/sailfish-qtcreator,danimo/qt-creator,xianian/qt-creator,maui-packages/qt-creator,xianian/qt-creator,amyvmiwei/qt-creator,kuba1/qtcreator,Distrotech/qtcreator,martyone/sailfish-qtcreator,kuba1/qtcreator,farseerri/git_code,kuba1/qtcreator,AltarBeastiful/qt-creator,amyvmiwei/qt-creator,farseerri/git_code,Distrotech/qtcreator,martyone/sailfish-qtcreator,danimo/qt-creator,AltarBeastiful/qt-creator,maui-packages/qt-creator,farseerri/git_code,farseerri/git_code,amyvmiwei/qt-creator,danimo/qt-creator,amyvmiwei/qt-creator,martyone/sailfish-qtcreator,Distrotech/qtcreator,maui-packages/qt-creator,xianian/qt-creator,xianian/qt-creator,martyone/sailfish-qtcreator,Distrotech/qtcreator,xianian/qt-creator,farseerri/git_code,danimo/qt-creator,danimo/qt-creator,kuba1/qtcreator,martyone/sailfish-qtcreator,martyone/sailfish-qtcreator,farseerri/git_code,Distrotech/qtcreator,AltarBeastiful/qt-creator,maui-packages/qt-creator,AltarBeastiful/qt-creator,danimo/qt-creator,maui-packages/qt-creator,xianian/qt-creator,amyvmiwei/qt-creator,xianian/qt-creator,amyvmiwei/qt-creator,kuba1/qtcreator,kuba1/qtcreator,kuba1/qtcreator,Distrotech/qtcreator,maui-packages/qt-creator,amyvmiwei/qt-creator,Distrotech/qtcreator,AltarBeastiful/qt-creator,kuba1/qtcreator,martyone/sailfish-qtcreator