added properties and data types

backend/WebSem/.idea/.idea.WebSem/.idea/workspace.xml

 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
   <component name="ChangeListManager">
-    <list default="true" id="8d054e21-e284-419c-acba-f672639639a4" name="Default" comment="">
-      <change type="MODIFICATION" beforePath="$PROJECT_DIR$/.idea/.idea.WebSem/.idea/workspace.xml" afterPath="$PROJECT_DIR$/.idea/.idea.WebSem/.idea/workspace.xml" />
-      <change type="MODIFICATION" beforePath="$PROJECT_DIR$/WebApiWebSem/DataAccess/ArticlesDataAccess.cs" afterPath="$PROJECT_DIR$/WebApiWebSem/DataAccess/ArticlesDataAccess.cs" />
-      <change type="MODIFICATION" beforePath="$PROJECT_DIR$/WebApiWebSem/appsettings.Development.json" afterPath="$PROJECT_DIR$/WebApiWebSem/appsettings.Development.json" />
-      <change type="MODIFICATION" beforePath="$PROJECT_DIR$/../../frontend/WebSem/app/app.js" afterPath="$PROJECT_DIR$/../../frontend/WebSem/app/app.js" />
-      <change type="MODIFICATION" beforePath="$PROJECT_DIR$/../../frontend/WebSem/app/controllers/articleCategory.controller.js" afterPath="$PROJECT_DIR$/../../frontend/WebSem/app/controllers/articleCategory.controller.js" />
-      <change type="MODIFICATION" beforePath="$PROJECT_DIR$/../../frontend/WebSem/app/controllers/home.controller.js" afterPath="$PROJECT_DIR$/../../frontend/WebSem/app/controllers/home.controller.js" />
-      <change type="MODIFICATION" beforePath="$PROJECT_DIR$/../../frontend/WebSem/app/index.html" afterPath="$PROJECT_DIR$/../../frontend/WebSem/app/index.html" />
-      <change type="MODIFICATION" beforePath="$PROJECT_DIR$/../../frontend/WebSem/app/views/articlesCategory.html" afterPath="$PROJECT_DIR$/../../frontend/WebSem/app/views/articlesCategory.html" />
-      <change type="MODIFICATION" beforePath="$PROJECT_DIR$/../../frontend/WebSem/app/views/directives/article.html" afterPath="$PROJECT_DIR$/../../frontend/WebSem/app/views/directives/article.html" />
-    </list>
+    <list default="true" id="8d054e21-e284-419c-acba-f672639639a4" name="Default" comment="" />
     <option name="EXCLUDED_CONVERTED_TO_IGNORED" value="true" />
     <option name="TRACKING_ENABLED" value="true" />
     <option name="SHOW_DIALOG" value="false" />
       <workItem from="1487345029610" duration="5634000" />
       <workItem from="1487441650798" duration="14018000" />
       <workItem from="1487528667649" duration="13931000" />
-      <workItem from="1487802391451" duration="7174000" />
+      <workItem from="1487802391451" duration="7822000" />
     </task>
     <servers />
   </component>
   <component name="TimeTrackingManager">
-    <option name="totallyTimeSpent" value="47971000" />
+    <option name="totallyTimeSpent" value="48619000" />
   </component>
   <component name="TodoView">
     <todo-panel id="selected-file">

frontend/WebSem/app/translations/en.json

       "property": "Property",
       "types": {
         "date/date": "Date",
-        "text/plain": "Text"
+        "text/plain": "Text",
+        "number/number": "Number"
       },
       "properties": {
         "birthDate": "Birth date",
-        "deathDate": "Death date"
+        "deathDate": "Death date",
+        "capital": "Capital",
+        "language": "Language",
+        "area": "Area",
+        "population": "Population"
       }
     },
     "deleteOne": "Do you really want to delete article '{text}'?",

frontend/WebSem/sdk/Business/apputils.business.js

 
             AppUtilsBusiness.articleTypes = ['persons', 'locations', 'countries'];
 
-            AppUtilsBusiness.articleFieldTypes = ['date/date', 'text/plain'];
+            AppUtilsBusiness.articleFieldTypes = ['date/date', 'text/plain', 'number/number'];
 
-            AppUtilsBusiness.articleFieldProperties = ['birthDate', 'deathDate'];
+            AppUtilsBusiness.articleFieldProperties = ['birthDate', 'deathDate', 'capital', 'language', 'area', 'population'];
 
             return AppUtilsBusiness;
         }]);