private void setMigratedVersion(final int version, final String currentMigrateVersionTitle) {
            this.currentMigrateVersion = version;
            this.currentMigrateVersionTitle = currentMigrateVersionTitle;
            Log.d("MigrateLocalStorage to " + version + ": " + currentMigrateVersionTitle);
            displayProgress(null);
        }
Returns the external public cgeo directory, something like <pre>/sdcard/cgeo</pre>.
It falls back to the internal cgeo directory if the external is not available.
main/src/main/java/cgeo/geocaching/storage/LocalStorage.java