Trebuchet: CA translations

Change-Id: I25c6ad6f7c291dfcf2f7c7563787420591e91dac
Trebuchet : Icon edit dialog fixes

Append text rather than setText for the edit dialog title, so that the
cursor moves to the end.

Keep track of customIconResource state to ensure its not reset.

Preserve custom icons when the linking application is updated

Change-Id: Icab0f0ce45f1dbb79ce895228303aa2c944f1213