Add the Deobsfucate Text block.

This block works like a text block. However the code it generates is
obsfucated so that the text string itself is obscured from view in a
packaged application. It is a good block to use to store an API key or
other information that is sensitive.

Note: This is not a perfect solution. A determined person can still
take a packaged file and extract the text string. However it takes
some effort.

Change-Id: I481e890b2230f69877b61a697743a921fb15fb83
Improve tooltip on obsfucate block.

Change-Id: Ib13ee3490e60c28b6a8a65167005820f5e6c18e8
Bug fix for git issue #160

Text Input Notifier component: Canceling a notifier input should hide
the keyboard.

Change-Id: Iefea7982b0b15391381a4b70d7b88ae5e74d45be
Updated deprecated calls to GWT CheckBox

Replacements are type-consistent drop-ins:
isChecked -> getValue
setChecked -> setValue

Change-Id: If727b574d181e95461bb6e270d5dc0ec879428ae
Designer property for "visible" now uses checkbox

Replaces pulldown that had text options.

Change-Id: I68a8a202dc24b5638defe9b7df2f3385a830e3c3