[ADF-983] User Preferences Service (#2044)

* user preferences service

* unit tests and code improvements

* fix tests

* fix tests

* fix tests

* add missing production settings

* readme updates

* integrate with the core module

demo-shell-ng2/app.config-dev.json

@@ -4,6 +4,9 @@
     "application": {
         "name": "Alfresco"
     },
+    "pagination": {
+        "size": 25
+    },
     "activiti": {
         "rest": {
             "fields": [

demo-shell-ng2/app.config-prod.json

@@ -3,5 +3,24 @@
     "bpmHost": "http://{hostname}",
     "application": {
         "name": "Alfresco"
+    },
+    "pagination": {
+        "size": 25
+    },
+    "activiti": {
+        "rest": {
+            "fields": [
+                {
+                    "processId": "0",
+                    "taskId": "7501",
+                    "fieldId": "label10",
+                    "values": [
+                        { "id": "f1", "name": "Field 1" },
+                        { "id": "f2", "name": "Field 2" },
+                        { "id": "f3", "name": "Field 3" }
+                    ]
+                }
+            ]
+        }
     }
 }