OpenLP: Update to version 1.9.12 (2.0 RC2)

OpenLP was updated from version 1.9.11 (2.0 RC1) to version 1.9.12 (2.0 RC2)

Fixed bugs
bnc#782924
Update openLP from 1.9.11 (2.0 RC1) to 1.9.12 (2.0 RC2)
Selected Binaries
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