[webapi] Update 3 TCs for iap

- Update 3 TCs for iap
- Failure analysis: "In App Purchase" feature is not allowed in China

Impacted tests(approved): new 0, update 3, delete 0
Unit test platform: [Android]
Unit test result summary: pass 0, fail 3, block 0
[uecase-webapi][XWALK-2251] Improve nfc usecase

 -Change status to approved
 -Add clearLog function and setEnvironment function
 -Removed redundant test functions
 -Modified AddMessage function
 -Improve test steps and excepted results
 -Failure analysis: 1. startPoll() method does not work, can not change nfc hardware to polling mode, then nfc tag and peer device can not found.
                    2. When ran NFCTag::readNDEF(), NFCTag::writeNDEF(), NFCPeer::sendNDEF() method, neither callback was invoked.

Impacted tests(approved): new 0, update 1, delete 0
Unit test platform: [Tizen IVI]
Unit test result summary: pass 0, fail 1, block 0
[webapi] Update 3 TCs and add 28 TCs for MediaRenderer

- Update the playbackStatus attribute of type and add 28 basic TCs
- Failure analysis: The statuschanged event and rendererlost event cannot be fired

Impacted tests(approved): new 28, update 3, delete 0
Unit test platform: [Tizen IVI]
Unit test result summary: pass 52, fail 8, block 12
[sample] Replace PNG_512x512_318Kb_BBB.png with ryb-100x100.png

- This image is only referenced by Screen Orientation sample,
  which makes a colorful view.
- Improve Screen Orientation sample code and format.
- Remove unnecessary COPYING files.
[wrt] Update cases for wrt android
Merge pull request #828 from haoxli/haoxli/usecase/webapi-nfc

[uecase-webapi][XWALK-2251] Improve nfc usecase
Merge pull request #833 from kangxu/kangxu/wrt/wrtcases/fix

[wrt] Update cases for wrt android
Merge pull request #829 from zqzhang/PNG_512x512_318Kb_BBB.png

[sample] Replace PNG_512x512_318Kb_BBB.png with ryb-100x100.png
Merge pull request #816 from yunxliu/yunxliu/webapi/iap_modify

[webapi] Update 3 TCs for iap
Fix some issues in packing suite.json

Signed-off-by: Hao yunfeix <yunfeix.hao@intel.com>
Merge pull request #834 from haoyunfeix/yunfei/Fix-issue-in-suite-json-file

Fix some issues in packing suite.json
[usecase-webapi] Rename DLNA to MediaServer

- Rename DLNA to MediaServer
- Failure analysis: https://crosswalk-project.org/jira/browse/XWALK-1878

Impacted tests(approved): new 0, update 1, delete 0
Unit test platform: [Tizen IVI]
Unit test result summary: pass 0, fail 1, block 0
Merge pull request #811 from yunxliu/yunxliu/misc/dlna_rename

[usecase-webapi] Rename DLNA to MediaServer
[behavior][XWALK-1565]Add powerfailure testcase for behavior

[Detailed commit message (if have)]
Impacted TCs num(designed): New 1, update 0, deleted 0
Unit test platform: [tizen]
Merge pull request #789 from yunxliu/yunxliu/webapi/mediaRenderer_change

[webapi] Update 3 TCs and add 28 TCs for MediaRenderer
[sample] Remove unreferenced style file
Merge pull request #836 from zqzhang/test.css

[sample] Remove unreferenced style file
Merge pull request #835 from linshen/wrt/shenlin/movetctbehaviorpowerfailure

[behavior][XWALK-1565]Add powerfailure testcase for behavior