VCS: Avoid repetitive calls to cleanupDescription in submit editor
VCS: Avoid repetitive calls to cleanupDescription in submit editor

It is called twice on each change to the text, and called again on
commit.

Change-Id: I8bfa2b37247a270f8b92e0b8a4e581278acf4cea
Reviewed-by: Tobias Hunger <012f8d714267bccc9d4766fbeace9f175fcc70c4@digia.com>

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