Translation hunks and NEWS file updated

LFO LV2 RTK UI: Added mouse wheel control for Offset (as in the Qt UI)

LFO LV2: Fixed a fatal error introduced by button addition at the wrong place

Autotools: Fixed last commit not working at all as promised

Autotools: changed logic in Qt5/6 detection

NEWS file updated

Seq LV2 RTK: Fixed output channel control not reacting

LV2 all: Fixed repetitive restarts when under host transport control

Still autotools build: Fixed path in previous commit and clean a bit

Autotools build: Fixed remaining visible symbols (again)

LV2 all: Do not set transport position when changing tempo and running freely

LV2 Arp: Set trigger by keybord enabled by default

RTK Lfo and Seq: added missing widget cleanups for host tempo button

RTK LFO and Seq: make sure the wave/sequence gets drawn once

RTK: Fixed button activation order during UI setup