[politeia] Update politeia vote status constants (decred#1714)

Make sure gif is used instead of png

Update react-dom to 16.0.1 (decred#1633)

Bump for v1.2.1 (decred#1346)

Final translations for 1.2.0 (decred#1322)

Fix issue of closing expanded ticket details (decred#1304)

Update electron due to security vulnerability (decred#1289)

Rollback react-select to 1.0.0-rc.10 (decred#1020)

Bump for v1.1.2 (decred#979)

Update electron-builder and some other tweaks (decred#923)