Mms: Remove text/plain for ACTION_SEND

Always display registered apps for android.intent.action.SEND action, but this is not true.
Actually, it doesn't support that mime/type. Just remove it to avoid unexpected behaviour for
external apps.

See ComposeMessageActivity#addAttachment

Change-Id: I4815a59533dbfc3decfbdbc57bf456ebda3cab7a
Signed-off-by: Jorge Ruesga <jorge@ruesga.com>
Mms: Refactor CM Additions resources

Change-Id: If4798a9ad50dbc729fb83a23309a6103d3a98e16
Mms: Update template activity to Google UI guidelines

Replace floating context menu by contextual action mode.
See http://developer.android.com/guide/topics/ui/menus.html#context-menu

Patch Set 1:    * initial commit

Patch Set 2:    * add forgotten files

Patch Set 3:    * fix some styling issues
                * use correct copyright
                * remove res/menu/templates_list_context_menu.xml

Patch Set 4:    * rebased

Patch Set 5:    * some code cleanup

Patch Set 6:    * move strings to cm_strings.xml

Change-Id: I80bed09427e208ab180b0e7cb3aa1a070507621c
PT-BR: Update translation

Change-Id: Iaa8179bf8a7871c48f36f9961c940e7af47a58bf