Profile introduction

Introduce Profiles to store sets of values that describe a system/device.

These profiles are held by a target, getting rid of much of the information
stored in the Build-/Run-/DeployConfigurations, greatly simplifying those.

This is a squash of the wip/profile branch which has been on gerrit for a
while, rebased to current master.

Change-Id: I25956c8dd4d1962b2134bfaa8a8076ae3909460f
Reviewed-by: Daniel Teske <daniel.teske@nokia.com>

src/plugins/qmlprojectmanager/qmlprojectmanager.pro

@@ -25,7 +25,6 @@ HEADERS += qmlproject.h \
     qmlprojectapplicationwizard.h \
     qmlprojectmanager_global.h \
     qmlprojectmanagerconstants.h \
-    qmlprojecttarget.h \
     qmlprojectrunconfigurationwidget.h
 
 SOURCES += qmlproject.cpp \
@@ -37,7 +36,6 @@ SOURCES += qmlproject.cpp \
     qmlprojectrunconfiguration.cpp \
     qmlprojectrunconfigurationfactory.cpp \
     qmlprojectapplicationwizard.cpp \
-    qmlprojecttarget.cpp \
     qmlprojectrunconfigurationwidget.cpp
 
 RESOURCES += qmlproject.qrc