These were not working on some screens due to portrait/landscape
layout issues. The worst cases were the "basics" screen and "exchange",
but I cleaned up all of the screens that had similar issues.
Resolves bug 2070902 which made it difficult to create accounts on
some devices.
* Moved welcome message into account setup basics (name/pass)
* Reworked Welcome to go to AccountSetupBasics on count=0
* In AccountFolderList, removed old welcome message code, and add
code to launch AccountSetupBasics when last account is deleted
* Fixed shortcut picker so launcher shortcuts work again
* Reimplemented shortcut receiver (in MessageList now)
* Default EAS accounts to SSL
Addresses bug 1916583 & 1987440
