Android: Rework Create AVD dialog

Filter the list of api levels to only show those that can be created.

Change-Id: I7aaaa58324ca44176e39982cda29d746011fa346
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@digia.com>

src/plugins/android/android.pro

@@ -55,7 +55,8 @@ HEADERS += \
     javaindenter.h \
     javaautocompleter.h \
     javacompletionassistprovider.h \
-    javafilewizard.h
+    javafilewizard.h \
+    avddialog.h
 
 SOURCES += \
     androidconfigurations.cpp \
@@ -105,7 +106,8 @@ SOURCES += \
     javaindenter.cpp \
     javaautocompleter.cpp \
     javacompletionassistprovider.cpp \
-    javafilewizard.cpp
+    javafilewizard.cpp \
+    avddialog.cpp
 
 FORMS += \
     androidsettingswidget.ui \