Fix GRUB theme, wallpaper, and netinstall config

- buildiso: copy Antergos GRUB theme to ISO boot directory
- profile.yaml: add antergos-grub-theme to rootfs packages
- netinstall: move antergos-grub-theme from optional Style to mandatory Default group
- main.xml: set Antergos wallpaper as KDE system default
- set-antergos-wallpaper.sh: add QDbus fallback, wait for plasmashell
- .gitignore: ignore linux-next/ and winver/

iso-profiles/antergos/live-overlay/etc/calamares-online/modules/netinstall.yaml

@@ -10,6 +10,7 @@
     - grub
     - efibootmgr
     - sudo
+    - antergos-grub-theme
 
 - name: "Kernel"
   description: "Kernel and modules"
@@ -61,8 +62,7 @@
 - name: "Style"
   description: "Antergos themes, icons, branding"
   selected: false
-  packages:
-    - antergos-grub-theme
+  packages: []
 
 - name: "Desktop"
   description: "DE"

iso-profiles/antergos/live-overlay/etc/calamares/modules/netinstall.yaml

@@ -10,6 +10,7 @@
     - grub
     - efibootmgr
     - sudo
+    - antergos-grub-theme
 
 - name: "Kernel"
   description: "Kernel and modules"
@@ -61,8 +62,7 @@
 - name: "Style"
   description: "Antergos themes, icons, branding"
   selected: false
-  packages:
-    - antergos-grub-theme
+  packages: []
 
 - name: "Desktop"
   description: "DE"