base: added national roaming info for Play in Poland

http://jira.omnirom.org/browse/OMNI-105

Users of Play in Poland (MCC 260 MNC 06) can roam on
Plus, T-Mobile, Orange (MNCs 01/02/03)

Change-Id: I8ea62b0ca40bac9ced11802ee8ef583d6392a199
Parse UUID string with Long.parseLong

Integer.parseInt throws an NPE for values greater than 0x7fffffff.

Change-Id: I4a67c96e1fcdb68b22447f98bc898638c8c317a0

Patchset: 1
https://gerrit.omnirom.org/#/c/3372/