HeaderViewListAdapter: Correct thrown error names.

When accessing an invalid entry of the list, an IndexOutOfBounds exception is thrown, not an ArrayIndexOutOfBounds exception.

Change-Id: I3cf59faab004fa6391d84f30f280e0c9bd92dc44
Signed-off-by: Taylor H. Perkins <taylorhp@gmail.com>
when locale is non-Enligh, sometimes month spinner needs a number IME

When locale is non-English like korean, chinese, etc.,
month displayed string is started with number.

So, It's better to use Number IME for month selection.

Change-Id: If0444d62679b1f31d98fdedd2f06c2d445cade2a