[TIMOB-7167] MobileWeb: Complete Ti.UI implementation

Almost complete implementation. Extends Evented. Need to remove the following unsupported and platform specific methods and constants: * createDashboardItem() * createDashboardView() * INPUT_BUTTONMODE_ALWAYS * INPUT_BUTTONMODE_NEVER * INPUT_BUTTONMODE_ONBLUR * INPUT_BUTTONMODE_ONFOCUS * KEYBOARD_APPEARANCE_ALERT * KEYBOARD_APPEARANCE_DEFAULT * KEYBOARD_ASCII * KEYBOARD_DEFAULT * KEYBOARD_EMAIL * KEYBOARD_NAMEPHONE_PAD Update API docs with supported methods, properties, and constants: * create2DMatrix() * createEmailDialog() * createOptionDialog() * createPickerColumn() * createProgressBar() * createScrollableView() * createToolbar() * FACE_DOWN * FACE_UP * INPUT_BORDERSTYLE_BEZEL * INPUT_BORDERSTYLE_LINE * INPUT_BORDERSTYLE_NONE * INPUT_BORDERSTYLE_ROUNDED * LANDSCAPE_LEFT * LANDSCAPE_RIGHT * PICKER_TYPE_COUNT_DOWN_TIMER * PICKER_TYPE_DATE * PICKER_TYPE_DATE_AND_TIME * PICKER_TYPE_PLAIN * PICKER_TYPE_TIME * PORTRAIT * TEXT_ALIGNMENT_CENTER * TEXT_ALIGNMENT_RIGHT * TEXT_ALIGNMENT_LEFT * TEXT_AUTOCAPITALIZATION_ALL * TEXT_AUTOCAPITALIZATION_NONE * TEXT_AUTOCAPITALIZATION_SENTENCES * TEXT_AUTOCAPITALIZATION_WORDS * TEXT_VERTICAL_ALIGNMENT_BOTTOM * TEXT_VERTICAL_ALIGNMENT_CENTER * TEXT_VERTICAL_ALIGNMENT_TOP * UNKNOWN * UPSIDE_PORTRAIT