Add missing categories group to icon theme files

diff --git a/IconThemes/kdeclassic/index.theme b/IconThemes/kdeclassic/index.theme
index f317224..92e873a 100644
--- a/IconThemes/kdeclassic/index.theme
+++ b/IconThemes/kdeclassic/index.theme
@@ -123,7 +123,7 @@
 SmallSizes=16
 PanelDefault=32
 PanelSizes=16,32,48
-Directories=16x16/actions,22x22/actions,16x16/apps,32x32/apps,16x16/devices,32x32/devices,16x16/places,32x32/places,16x16/mimetypes,32x32/mimetypes,32x32/actions,48x48/apps,48x48/devices,48x48/places,48x48/mimetypes,64x64/places,64x64/mimetypes,64x64 apps
+Directories=16x16/actions,22x22/actions,16x16/apps,16x16/categories,22x22/categories,32x32/apps,32x32/categories,16x16/devices,32x32/devices,16x16/places,32x32/places,16x16/mimetypes,32x32/mimetypes,32x32/actions,48x48/apps,48x48/categories,48x48/devices,48x48/places,48x48/mimetypes,64x64/places,64x64/mimetypes,64x64 apps
 [16x16/actions]
 Size=16
 Context=Actions
@@ -131,6 +131,10 @@
 [22x22/actions]
 Size=22
 Context=Actions
+Type=Threshold
+[22x22/categories]
+Size=22
+Context=Categories
 Type=Threshold
 [32x32/actions]
 Size=32
@@ -140,6 +144,10 @@
 Size=16
 Context=Applications
 Type=Threshold
+[16x16/categories]
+Size=16
+Context=Categories
+Type=Threshold
 [16x16/devices]
 Size=16
 Context=Devices
@@ -147,6 +155,10 @@
 [32x32/apps]
 Size=32
 Context=Applications
+Type=Threshold
+[32x32/categories]
+Size=32
+Context=Categories
 Type=Threshold
 [32x32/devices]
 Size=32
@@ -172,6 +184,10 @@
 Size=48
 Context=Applications
 Type=Threshold
+[48x48/categories]
+Size=48
+Context=Categories
+Type=Threshold
 [48x48/devices]
 Size=48
 Context=Devices
diff --git a/IconThemes/kids/index.theme b/IconThemes/kids/index.theme
index 6dfa935..b615fbc 100644
--- a/IconThemes/kids/index.theme
+++ b/IconThemes/kids/index.theme
@@ -99,7 +99,7 @@
 SmallSizes=16
 PanelDefault=48
 PanelSizes=16,32,48,64,128
-Directories=16x16/actions,22x22/actions,32x32/actions,48x48/actions,64x64/actions,128x128/actions,16x16/apps,32x32/apps,48x48/apps,64x64/apps,128x128/apps,16x16/devices,32x32/devices,48x48/devices,64x64/devices,128x128/devices,16x16/places,32x32/places,48x48/places,64x64/places,128x128/places,16x16/mimetypes,32x32/mimetypes,48x48/mimetypes,64x64/mimetypes,128x128/mimetypes,48x48/devices,48x48/places,48x48/mimetypes,64x64/places,64x64/mimetypes,64x64/devices,64x64/apps,64x64/actions,128x128/mimetypes,128x128/places,128x128/apps,128x128/devices,128x128/actions
+Directories=16x16/actions,22x22/actions,32x32/actions,48x48/actions,64x64/actions,128x128/actions,16x16/apps,32x32/apps,48x48/apps,64x64/apps,128x128/apps,16x16/categories,22x22/categories,32x32/categories,48x48/categories,64x64/categories,16x16/devices,32x32/devices,48x48/devices,64x64/devices,128x128/devices,16x16/places,32x32/places,48x48/places,64x64/places,128x128/places,16x16/mimetypes,32x32/mimetypes,48x48/mimetypes,64x64/mimetypes,128x128/mimetypes,48x48/devices,48x48/places,48x48/mimetypes,64x64/places,64x64/mimetypes,64x64/devices,64x64/apps,64x64/actions,128x128/mimetypes,128x128/places,128x128/apps,128x128/devices,128x128/actions
 [16x16/actions]
 Size=16
 Context=Actions
@@ -144,6 +144,22 @@
 Size=128
 Context=Applications
 Type=Threshold
+[16x16/categories]
+Size=16
+Context=Categories
+Type=Threshold
+[32x32/categories]
+Size=32
+Context=Categories
+Type=Threshold
+[48x48/categories]
+Size=48
+Context=Categories
+Type=Threshold
+[64x64/categories]
+Size=64
+Context=Categories
+Type=Threshold
 [16x16/devices]
 Size=16
 Context=Devices
diff --git a/IconThemes/locolor/index.theme b/IconThemes/locolor/index.theme
index 278135a..993ea3a 100644
--- a/IconThemes/locolor/index.theme
+++ b/IconThemes/locolor/index.theme
@@ -116,7 +116,7 @@
 PanelDefault=16
 PanelSizes=16,32
 LockOverlay=lockoverlay
-Directories=16x16/actions,16x16/apps,16x16/devices,16x16/places,16x16/mimetypes,32x32/apps,32x32/devices,32x32/places,32x32/mimetypes
+Directories=16x16/actions,16x16/apps,16x16/categories,16x16/devices,16x16/places,16x16/mimetypes,32x32/apps,32x32/categories,32x32/devices,32x32/places,32x32/mimetypes
 [16x16/actions]
 Size=16
 Context=Actions
@@ -124,6 +124,10 @@
 [16x16/apps]
 Size=16
 Context=Applications
+Type=Fixed
+[16x16/categories]
+Size=16
+Context=Categories
 Type=Fixed
 [16x16/devices]
 Size=16
@@ -141,6 +145,10 @@
 Size=32
 Context=Applications
 Type=Fixed
+[32x32/categories]
+Size=32
+Context=Categories
+Type=Fixed
 [32x32/devices]
 Size=32
 Context=Devices
diff --git a/IconThemes/slick/index.theme b/IconThemes/slick/index.theme
index e34f619..1fe9b3f 100644
--- a/IconThemes/slick/index.theme
+++ b/IconThemes/slick/index.theme
@@ -105,7 +105,7 @@
 SmallSizes=16,22
 PanelDefault=32
 PanelSizes=16,22,32,48,64,128
-Directories=16x16/actions,22x22/actions,22x22/apps,22x22/mimetypes,22x22/places,32x32/actions,48x48/actions,64x64/actions,128x128/actions,16x16/apps,32x32/apps,48x48/apps,64x64/apps,128x128/apps,16x16/devices,22x22/devices,32x32/devices,48x48/devices,64x64/devices,128x128/devices,16x16/places,32x32/places,48x48/places,64x64/places,128x128/places,16x16/mimetypes,32x32/mimetypes,48x48/mimetypes,64x64/mimetypes,128x128/mimetypes,48x48/devices,48x48/places,48x48/mimetypes,64x64/places,64x64/mimetypes,64x64/devices,64x64/apps,64x64/actions,128x128/mimetypes,128x128/places,128x128/apps,128x128/devices,128x128/actions
+Directories=16x16/actions,16x16/categories,22x22/actions,22x22/apps,22x22/categories,22x22/mimetypes,22x22/places,32x32/actions,48x48/actions,64x64/actions,128x128/actions,16x16/apps,32x32/apps,32x32/categories,48x48/apps,48x48/categories,64x64/apps,128x128/apps,16x16/devices,22x22/devices,32x32/devices,48x48/devices,64x64/devices,128x128/devices,16x16/places,32x32/places,48x48/places,64x64/places,128x128/places,16x16/mimetypes,32x32/mimetypes,48x48/mimetypes,64x64/mimetypes,128x128/mimetypes,48x48/devices,48x48/places,48x48/mimetypes,64x64/places,64x64/mimetypes,64x64/devices,64x64/apps,64x64/actions,128x128/mimetypes,128x128/places,128x128/apps,128x128/devices,128x128/actions
 [16x16/actions]
 Size=16
 Context=Actions
@@ -154,6 +154,22 @@
 Size=128
 Context=Applications
 Type=Threshold
+[16x16/categories]
+Size=16
+Context=Categories
+Type=Threshold
+[32x32/categories]
+Size=32
+Context=Categories
+Type=Threshold
+[22x22/categories]
+Size=22
+Context=Categories
+Type=Threshold
+[48x48/categories]
+Size=48
+Context=Categories
+Type=Threshold
 [16x16/devices]
 Size=16
 Context=Devices