Adds back some missing english strings. Fixes #876
Merge pull request #877 from wordpress-mobile/issue/876-missing-string-crash

Adds back some missing english strings. Fixes #876
Fix #878 - reader backstack issue
Merge pull request #879 from wordpress-mobile/issue/878-reader-backstack

Fix #878 - reader backstack issue
Version code bump, and use latest version of build tools.
add new XMLRPC response to tests
New utils class specific for robotium tests
New XMLRPCClientMock loading .xml files
Split XMLRPCClient.call() to extract the response parser
Factorize robotium test cases
New media browser tests - ref #876
Merge branch 'develop' into feature/japan-testing