Remove obsolete help files

Add missing group help files

resources/function_help/json/$atlasfeature

@@ -1,7 +0,0 @@
-{
-  "name": "$atlasfeature",
-  "type": "function",
-  "description": "In atlas generation, returns the current feature that is iterated over on the coverage layer. This can be used with the 'attribute' function to return attribute values from the current atlas feature.",
-  "examples": [ { "expression":"attribute( $atlasfeature, 'name' )", "returns":"value stored in 'name' attribute for the current atlas feature"}]
-}
-

resources/function_help/json/$atlasfeatureid

@@ -1,7 +0,0 @@
-{
-  "name": "$atlasfeatureid",
-  "type": "function",
-  "description": "Returns the feature id of the current row while using atlas. This enables you to use features of atlas in rules and for example show or hide features based on their id.",
-  "examples": [ { "expression":"$atlasfeatureid = $id", "returns":"true"}]
-}
-

resources/function_help/json/$atlasgeometry

@@ -1,7 +0,0 @@
-{
-  "name": "$atlasgeometry",
-  "type": "function",
-  "description": "Returns the geometry of the current feature iterated in atlas. Can be used for rule based display of geometry when using atlas. For example to only show geometries of other layers when their geometry intersects the iterated geometry of features using atlas.",
-  "examples": [ { "expression":"intersects( $atlasgeometry, $geometry )", "returns":"true"}]
-}
-

resources/function_help/json/$feature

@@ -1,7 +0,0 @@
-{
-  "name": "$feature",
-  "type": "function",
-  "description": "In atlas generation, returns the current feature number that is iterated over on the coverage layer.",
-  "examples": [ { "expression":"$feature", "returns":"2"}
-  ]
-}

resources/function_help/json/$numfeatures

@@ -1,8 +0,0 @@
-{
-  "name": "$numfeatures",
-  "type": "function",
-  "description": "In atlas generation, returns the total number of features within the coverage layer.",
-  "examples": [
-	{ "expression":"$numfeatures", "returns":"42"}
-  ]
-}

resources/function_help/json/$numpages

@@ -1,7 +0,0 @@
-{
-  "name": "$numpages",
-  "type": "function",
-  "description": "Returns the total number of pages in the composition.",
-  "examples": [ { "expression":"$numpages", "returns":"42"}
-  ]
-}

resources/function_help/json/Form

@@ -0,0 +1,5 @@
+{
+  "name": "Form",
+  "type": "group",
+  "description": "This group contains functions that operate exclusively under the attribute form context. For example, in field's widgets settings."
+}

resources/function_help/json/Layout

@@ -0,0 +1,5 @@
+{
+  "name": "Layout",
+  "type": "group",
+  "description": "This group contains functions to manipulate print layout items properties."
+}

resources/function_help/json/Processing

@@ -0,0 +1,5 @@
+{
+  "name": "Processing",
+  "type": "group",
+  "description": "This group contains functions that operate exclusively under the processing algorithms context."
+}