GB: mess in coalition/opposition data

[TomazErjavec]

A user of our corpora v2.1 has noticed that the GB metatada for all years, except 2015, gives all parties as Opposition. I had a look at the GB root file, and the problem seems to be that the same parties for the same time frame are included in both the Coalition and the Opposition relation, e.g. party.CON below:

<relation name="coalition" 
                            mutual="#party.CON #party.LD"
                            from="2010-05-06"
                            to="2015-05-07"/>
<relation name="opposition"
                            active="#party.LAB #party.SO0T #party.64RT #party.SDLP #party.L1QU #party.0UBS #party.BI #party.LI #party.LB #party.LJ95 #party.IGC #party.NPBE #party.CB #party.QMZZ #party.IL #party.UUP #party.FZPG #party.A #party.GP #party.SNP #party.I #party.L8TA #party.CON #party.NA #party.DUP #party.UUSL #party.ZKPW #party.UKIP #party.PC"
                            passive="#government.GB"
                            from="2010-05-06"
                            to="2015-05-07"/>

This should be fixed.