Introduced the MasterController as part of working on loading catalogue information.

Need a central piece to manage the catalogue data per database to prevent loading
this multiple times. MasterController is now also used to enable reopening the
connection manager from a query window after the connection manager has been closed.

pglab.pro

@@ -43,7 +43,15 @@ SOURCES += main.cpp\
     pgtype.cpp \
     pgsqldatabasecatalogue.cpp \
     pgtypecontainer.cpp \
-    tuplesresultwidget.cpp
+    tuplesresultwidget.cpp \
+    pgnamespace.cpp \
+    pgclass.cpp \
+    backupdialog.cpp \
+    paramlistmodel.cpp \
+    paramtypedelegate.cpp \
+    typeselectionitemmodel.cpp \
+    opendatabase.cpp \
+    MasterController.cpp
 
 HEADERS  += mainwindow.h \
     serverproperties.h \
@@ -72,7 +80,15 @@ HEADERS  += mainwindow.h \
     pgtype.h \
     pgsqldatabasecatalogue.h \
     pgtypecontainer.h \
-    tuplesresultwidget.h
+    tuplesresultwidget.h \
+    pgnamespace.h \
+    pgclass.h \
+    backupdialog.h \
+    paramlistmodel.h \
+    paramtypedelegate.h \
+    typeselectionitemmodel.h \
+    opendatabase.h \
+    MasterController.h
 
 FORMS    += mainwindow.ui \
     serverproperties.ui \
@@ -80,7 +96,8 @@ FORMS    += mainwindow.ui \
     connectionmanagerwindow.ui \
     databaseinspectorwidget.ui \
     tuplesresultwidget.ui \
-    querytab.ui
+    querytab.ui \
+    backupdialog.ui
 
 RESOURCES += \
     resources.qrc