Change colspan in listview (#2058)

* Change colspan in listview

Closed last PR as I messed up with my repo.

Sometimes the fields have too much space or it is really small, this solutions allows the users to modify the field colspan per field using the following syntax in frappe.listview_settings

`column_colspan: {"fieldname":2},`

* Update docfield.json

frappe/core/doctype/docfield/docfield.json

@@ -943,8 +943,8 @@
    "bold": 0, 
    "collapsible": 0, 
    "columns": 0, 
-   "depends_on": "eval:cur_frm.doc.istable", 
-   "description": "Number of columns for a field in a Grid (Total Columns in a grid should be less than 11)", 
+   "depends_on": "", 
+   "description": "Number of columns for a field in a List View or a Grid (Total Columns should be less than 11)", 
    "fieldname": "columns", 
    "fieldtype": "Int", 
    "hidden": 0, 
@@ -1093,4 +1093,4 @@
  "read_only_onload": 0, 
  "sort_order": "ASC", 
  "track_seen": 0 
-}
+}

frappe/public/js/frappe/list/listview.js

@@ -178,6 +178,12 @@ frappe.views.ListView = Class.extend({
 		} else if(df.fieldtype=="Text Editor" || df.fieldtype=="Text") {
 			colspan = 4;
 		}
+		if(df.columns && df.columns>0){
+			colspan = df.columns;
+		}
+		else if(this.settings.column_colspan && this.settings.column_colspan[df.fieldname]) {
+			colspan = this.settings.column_colspan[df.fieldname];
+		}
 		this.total_colspans += parseInt(colspan);
 		var col = {
 			colspan: colspan,