Clean up toolbars, browser.

Replaced the red delete button / white "open page" button with toolbar buttons, which should be easier to discover since you don't have to scroll down.
Gave the in-app browser for detail pages a toolbar with back/refresh/stop/fwd,
and moved the action button to bottom.
Hid actionsheet in BrowserHelper as an implementation detail...
whoops
fix compiler warnings about unused unimplmented method
Show network activity indicator while loading web pages
Refresh list when logging in or switching between test and commons
Open settings automatically if not logged in
update button state on webview toolbar at start
Pop up the detail view when creating a new item
Show "Queued" instead of progress bar at 0%
Merge branch 'master' of https://github.com/dz1111/Commons-iOS
moving testing headers and library to Commons-iOS-Logic-Testing