conference : UI implementation

- add a button on to add people
- add a button to join call with a parent
(launched with add people button)
- reuse transferdialog to present the information for add people
- rename transferdialog to callutilsdialog
- add a method to set the current distant renderer instead of being
dependant of LRC signals
- various code clean-up

Tuleap: #29
Change-Id: I7f8875011702b586f2155e87c60f43f806494e65
diff --git a/RingWinClient.pro b/RingWinClient.pro
index 8e36a42..d5ba0af 100644
--- a/RingWinClient.pro
+++ b/RingWinClient.pro
@@ -56,8 +56,8 @@
     contactpicker.cpp \
     contactmethodpicker.cpp \
     globalsystemtray.cpp \
-    transferdialog.cpp \
-    smartlistdelegate.cpp
+    smartlistdelegate.cpp \
+    callutilsdialog.cpp
 
 HEADERS  += mainwindow.h \
     callwidget.h \
@@ -84,8 +84,8 @@
     contactmethodpicker.h \
     settingskey.h \
     globalsystemtray.h \
-    transferdialog.h \
-    smartlistdelegate.h
+    smartlistdelegate.h \
+    callutilsdialog.h
 
 FORMS    += mainwindow.ui \
     callwidget.ui \
@@ -99,7 +99,7 @@
     videooverlay.ui \
     contactpicker.ui \
     contactmethodpicker.ui \
-    transferdialog.ui
+    callutilsdialog.ui
 
 win32: LIBS += -lole32 -luuid -lshlwapi