Added a feature that allows testers to add records to call log in device.
This feature requires the application under test have the WRITE_CALL_LOG
permission.
Created functionality to allow user to read call logs using ReadCallLog handler and associated endpoint.
This feature is used in the testing of the write call logs feature.
Additionally updated the write call logs feature to check for required permission and throw an exception if not.
Made changes to selendroid-client to allow add call log and read call logs features.
Added CallLogWrapper and SingleCallLog classes in selendroid-common-server utils.
These classes provide easier access to information from call logs retrieved from ReadCallLog handler.
These classes are also used to add call logs.

Addtionally, made some adjustments to pom files. Upgraded http-client from 4.2.1 to 4.3.2. This lack of upgrade
was causing Class not Found errors when attempting to test selendroid uisng the selendroid-test-app. Also added the
gson library to selendroid-server and selendroid-client to allow for the communication of CallLogWrapper and
SingleCallLog objects.
Changed name of SingleCallLog to CallLogEntry.
Made some adjustments to CallLogWrapper. Changed name to CallLogUtil and made it a true utility class,
no longer contains a list of all CallLogEntry objects. Instead contains static methods that require a
List of CallLogEntry argument.  Adjusted other files accordingly.
Merge branch 'master' of https://github.com/selendroid/selendroid

Conflicts:
	selendroid-test-app/pom.xml
reverted httpclient version back to 4.2.1 to prevent test failures.
changed httpclient version in pom files to working versions.
Removed CallLogWrapper class.
Merge branch 'master' of https://github.com/selendroid/selendroid

Conflicts:
	selendroid-client/src/main/java/io/selendroid/SelendroidCommandExecutor.java
	selendroid-server/src/main/java/io/selendroid/server/AndroidServlet.java
Fixed imports in AddCallLog and ReadCallLog.
Merge pull request #485 from mmnormyle/master

Added a feature that allows testers to add records to call log in device...