UnifiedEmail: Update "Fetching message" string

Change-Id: I8dbcf85280978e7b65f7f09584791a4f6678e60f
Merge branch 'cm-11.0' of https://github.com/CyanogenMod/android_packages_apps_UnifiedEmail into cm-11.0
Automatic translation import

Change-Id: Ifa6b3c70f4711424b8375ee806d1a3a682d9ec7e
Merge branch 'cm-11.0' of https://github.com/CyanogenMod/android_packages_apps_UnifiedEmail into cm-11.0
Merge branch 'cm-11.0' of https://github.com/temasek/android_packages_apps_UnifiedEmail into HEAD