[ADF-4793] The filters don't work on community-edition [ Use local storage for community version ] (#4973)

* * Use local storage for community version.

* * Created a communityModule.

* * Updated unit tests the recent changes

* * Updated documents.

* * Modified process/task filters doc.

docs/process-services-cloud/services/local-preference-cloud.service.md

@@ -0,0 +1,51 @@
+---
+Title: Local Preference Cloud Service
+Added: v3.4.0
+Status: Experimental
+Last reviewed: 2019-08-06
+---
+
+# [Local Preference Cloud Service](../../../lib/process-services-cloud/src/lib/services/local-preference-cloud.service.ts "Defined in local-preference-cloud.service.ts")
+
+Manages Local Storage preferences. 
+
+## Class members
+
+### Methods
+
+-   **createPreference**(appName: `string`, key: `string`, newPreference: `any`): [`Observable`](http://reactivex.io/documentation/observable.html)`<any>`<br/>
+    Creates local preference.
+    -   _appName:_ `string`  - Name of the target app 
+    -   _key:_ `string`  - Key of the target preference
+    -   _newPreference:_ `any`  - 
+    -   **Returns** [`Observable`](http://reactivex.io/documentation/observable.html)`<any>` - Observable of created local preferences
+-   **deletePreference**(key: `string`, preferences: `any`): [`Observable`](http://reactivex.io/documentation/observable.html)`<any>`<br/>
+    Deletes local preference by given preference key.
+    -   _key:_ `string`  - Key of the target preference
+    -   _preferences:_ `any`  - Details of updated preferences
+    -   **Returns** [`Observable`](http://reactivex.io/documentation/observable.html)`<any>` - Observable of preferences without deleted preference
+-   **getPreferenceByKey**(appName: `string`, key: `string`): [`Observable`](http://reactivex.io/documentation/observable.html)`<any>`<br/>
+    Gets local preference.
+    -   _appName:_ `string`  - Name of the target app
+    -   _key:_ `string`  - Key of the target preference
+    -   **Returns** [`Observable`](http://reactivex.io/documentation/observable.html)`<any>` - Observable of local preference
+-   **getPreferences**(appName: `string`, key: `string`): [`Observable`](http://reactivex.io/documentation/observable.html)`<any>`<br/>
+    Gets local preferences
+    -   _appName:_ `string`  - Name of the target app
+    -   _key:_ `string`  - (Optional) (Optional) (Optional) (Optional) 
+    -   **Returns** [`Observable`](http://reactivex.io/documentation/observable.html)`<any>` - List of local preferences
+-   **prepareLocalPreferenceResponse**(key: `string`): `any`<br/>
+
+    -   _key:_ `string`  - 
+    -   **Returns** `any` - 
+
+-   **updatePreference**(appName: `string`, key: `string`, updatedPreference: `any`): [`Observable`](http://reactivex.io/documentation/observable.html)`<any>`<br/>
+    Updates local preference.
+    -   _appName:_ `string`  - Name of the target app
+    -   _key:_ `string`  - Key of the target preference
+    -   _updatedPreference:_ `any`  - Details of updated preference
+    -   **Returns** [`Observable`](http://reactivex.io/documentation/observable.html)`<any>` - Observable of updated local preferences
+
+## See also
+
+-   [User preference Cloud Service](user-preference-cloud.service.md)