This change
* Allows snap back from symbols shifted to symbol layout.
* Add "left single", "right single", "single low" and "single high
reversed" quotation marks to popup characters of "single quote".
* Add "double low" and "double high reversed" quatation marks to popup
characters of "double quote".
* Add "prime" and "double prime" to popup characters of "degree".
* Disable non-ASCII key of symbol more layout on passowrd input.
Bug: 4345054
Bug: 4347045
Change-Id: I8168ce6a74a9536e4966f7f9d1099ac0132925c7
