Implement "search messages" action (fixes NB#57209).
[modest] / src / maemo / ui /
drwxr-xr-x   ..
-rw-r--r-- 6374 modest-main-window-ui.xml
-rw-r--r-- 5633 modest-msg-edit-window-ui.xml
-rw-r--r-- 5055 modest-msg-view-window-ui.xml