New flat icon themes from pexner

Squash and rework of commits from robotbrain

resources/pe_light/index.theme

@@ -0,0 +1,39 @@
+[Icon Theme]
+Name=pe_light
+Comment=Icons by pexner (light)
+Inherits=multimc
+Directories=scalable/apps,8x8,16x16,22x22,24x24,32x32,48x48,scalable
+
+[scalable/apps]
+Size=48
+Type=scalable
+MinSize=1
+MaxSize=512
+Context=Applications
+
+[8x8]
+Size=8
+
+[16x16]
+Size=16
+
+[22x22]
+Size=22
+
+[24x24]
+Size=24
+
+[32x32]
+Size=32
+
+[48x48]
+Size=48
+
+[64x64]
+Size=64
+
+[scalable]
+Size=48
+Type=Scalable
+MinSize=16
+MaxSize=256