Update RhodesActivity.java

To Collect the zoom value from Config.xml
Update GoogleWebView.java

To set the inital zoom value
Update RhodesActivity.java

To include in RhoConf rather in RhodesActivity
Update GoogleWebView.java

TO read from RhoConf
Update GoogleWebView.java

Fix Compilation iSSue
Update GoogleWebView.java

In Android the default is achieved at 150 factor
Update RhodesActivity.java

Default value is 1.0
Update GoogleWebView.java

In case any exception it will show default value
Merge pull request #320 from rhomobile/BLR_Android_PageZoom

Blr android page zoom