Sometimes the keyboard is getting confused about it's width when switching
between hard keyboard open and close state and portrait-forced home. Force
creation of keyboard layouts after a configuration change to fix the
inconsistent state.
Don't force create when just switching between input fields, too expensive.
Also fixes the problem of keyboard not changing layout after a locale change,
unless there's an orientation change.
The KeyboardSwitcher was remembering state from a previous edittext
where the user was in symbols mode and applying the switch code
when user hits space in the new edittext for the first time.
Make sure to reset the state when a new keyboard mode is requested.
Also make sure that we don't switch from symbols to alphabet keyboard
when editing in a number/datetime field and hitting space.
