Replace obsolete UTouch installation with SailfishOS installation

Change-Id: Ie7588fecf8f2bd1a260bab2c2a757f49ffef82ff
Fix typo in multirom_manage page XML, breaking the Flash ZIP button

Change-Id: I301a68f9db42b35dbac8f51d1864d88b35e1aa74
Fix copypaste error in 'Flash ZIP' button XML

* Goddammit.

Change-Id: I2c1f5a1969d7b8279ec5373d3f3560a0b4e600d3