[Merge] lp:~rpadovani/webbrowser-app/addressBarFullWidth into lp:webbrowser-app

[Riccardo Padovani]

Actually, upstream fixed bug #1384278, so per design we can hide the left action in the edit mode. 

So I changed the code to hide left action in edit mode and to change keyboard status. 

I also changed webbrowser_app.tests.test_addressbar_states.TestAddressBarStates.test_looses_focus_when_reloading to use "Enter" on keyboard instead of clicking the reload button.

The branch now should be ready to be merged
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https://code.launchpad.net/~rpadovani/webbrowser-app/addressBarFullWidth/+merge/239039
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