fix lib install location and remove now unnecesary hacks for python

also remove gendesk buildep as it isn't used and explicitly add qt5-webchannel dependency

.SRCINFO

@@ -1,6 +1,6 @@
 pkgbase = freecad-git
 	pkgdesc = A general purpose 3D CAD modeler - git checkout
-	pkgver = 0.20.0.28679.g35913fc695
+	pkgver = 0.20.0.28901.ga5ff515804
 	pkgrel = 1
 	url = https://www.freecadweb.org/
 	arch = x86_64
@@ -12,7 +12,6 @@ pkgbase = freecad-git
 	makedepends = coin
 	makedepends = eigen
 	makedepends = gcc-fortran
-	makedepends = gendesk
 	makedepends = git
 	makedepends = ninja
 	makedepends = python-shiboken2
@@ -35,6 +34,7 @@ pkgbase = freecad-git
 	depends = qt5-tools
 	depends = qt5-webkit
 	depends = qt5-webengine
+	depends = qt5-webchannel
 	depends = qt5-x11extras
 	depends = qt5-xmlpatterns
 	depends = qt5-base