Adds support to login with press of enter key (at keypad)

modified:   components/1.1/PictureBox.qml
	modified:   components/2.0/PictureBox.qml
	modified:   data/themes/circles/Main.qml
	modified:   data/themes/elarun/Main.qml
	modified:   data/themes/maldives/Main.qml