Integrate dynamic colorschemes into applications

Makes polybar use Xresources color values for its colors. Resets rofi
values to their default after being overwritten by the base16 themes.
Makes qutebrowser include the colorscheme in its configuration file.

Ignore dynamically generated colorschemes in .gitignore file.

polybar/.config/polybar/config

@@ -18,14 +18,14 @@
 
 [colors]
 ;background = ${xrdb:color0:#222}
-background = #222
-background-alt = #444
+background = ${xrdb:background}
+background-alt = ${xrdb:color8}
 ;foreground = ${xrdb:color7:#222}
-foreground = #dfdfdf
-foreground-alt = #555
-primary = #ffb52a
-secondary = #e60053
-alert = #bd2c40
+foreground = ${xrdb:foreground}
+foreground-alt = ${xrdb:color3}
+primary = ${xrdb:color1}
+secondary = ${xrdb:color4}
+alert = ${xrdb:color2}
 
 [settings]
 ; The throttle settings lets the eventloop swallow up til X events