[Tizen][Runtime] Enable "allow-navigation" feature for Tizen legacy WGT package.

In Tizen WGT package configure document, the <tizen:allow-nevigation>
tag will list all allowed domains of navigation links can be displayed
in web application.

Please refer to the section "0260 Tizen Navigation Policy"
https://source.tizen.org/sites/default/files/page/tizen-2.2-wrt-core-spec.pdf
for more details.
Merge pull request #1768 from takethathe/navigation_link

[Tizen][Runtime] Enable "allow-navigation" feature for Tizen legacy WGT package.