Merge pull request #449 from operatiay/activity_alias_support

Support for 'activity-alias' manifest tag by adding a new optional capability -launchActivity
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Added the functionality to send the app under test to background and resume it. Two new endpoints were added which route to BackgroundApp and ResumeApp handlers.
Merge branch 'master' of https://github.com/selendroid/selendroid
Corrected copyright comments.
Merge pull request #453 from mmnormyle/master

Added the functionality to send the app under test to background and resume it.
Updated selendroid-client to reflect backgrounding app capabilities and added
BackgroundAppTest.
Merge pull request #454 from mmnormyle/master

Added functionality in selendroid-client to reflect background app capabilities in selendroid server.
Changed the way the app is sent to background: now brings up Home screen
instead of moving the activities task back.
Added BackgroundAppTest in selendroid-test-app.
Changed some spacing and created a specific method for finding current acitivity through adb.
adding workaround for Japanese character encodings
Merge pull request #461 from mmnormyle/master

Update on sending a.u.t. to background functionality
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Merge pull request #463 from koichirok/japanese_encoding_workaround

adding workaround for Japanese character encodings
Avoid returning duplicate elements for findElementsBy*.

The problem was caused by getTopLevelViews() in NativeSearchScope
incorrectly returning the focused view even when it should not be
considered as top level.
Merge pull request #475 from lragnarsson/top_level_view_fix

Avoid returning duplicate elements for findElementsBy*.
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