QbsProjectManager fails at opening qtcreator.qbs

1. Start Creator with enabled QbsProjectManager plugin.
2. Open qtcreator.qbs from Creator's repository.
   Creator built from from master branch will show a project tree containing just qtcreator.qbs and a progress bar reading "Evaluating".
   
   When opening qtcreator.qbs from master branch in Creator 2.8.2, the progress bar will finish and then display two issues:

   C:\Users\rob\dev\src\creator-master\src\plugins\help\help.qbs:5: warning: Duplicate dependency 'Qt/core'.
   C:\Users\rob\dev\src\creator-master\share\share.qbs:11: error: File 'C:/Users/rob/dev/src/creator-master/share/qtcreator/dumper' does not exist.
   

   So the different versions lead to the following results:

   	qtcreator.qbs from 2.8 branch	qtcreator.qbs from master branch
   Creator built from 2.8 branch	works	progress bar finishes, issues displayed
   Creator built from master branch	progress bar does not finish	progress bar does not finish

Instead, Creator should parse and display the project correctly.