[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]
[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
[misc-wrt][xwalk-2329] Add one test

Impacted TCs num(approved): New 1, Update 0, Delete 0
Unit test Platform: Android
Android test result summary: Pass 1, Fail 0, Block 0
[sample] Remove unreferenced font
[misc] Update case available link

- Those tests results are wanming help me test

Impacted TCs num(approved): New 0, Update 8, Delete 0
Unit test Platform: Android
Android test result summary: Pass 8, Fail 0, Block 0
[webapi-usecase][XWALK-2471] Adding back AudioSystem and SSO to tizen

- Add AudioSystem and SSO to tests.tizen.full.xml

Impacted TCs num(approved): New 0, Update 2, Delete 0
Unit test Platform: Tizen IVI:crosswalk 9
Tizen test result summary: Pass 2, Fail 0, Blocked 0
Merge pull request #839 from xinliux/xinliux/usecase/XWALK-2471

[webapi-usecase][XWALK-2471] Adding lock of AudioSystem and SSO to tizen
Merge pull request #832 from wanghongjuan/wanghongjuan/misc/system

[misc-wrt][xwalk-2329] Add one test
Add apk common options support in pack tool
Merge pull request #838 from wanghongjuan/wanghongjuan/misc/sampleapp

[misc] Update case available link
Split BDD ui automaton tests from package app
Merge pull request #840 from yugang/yugang/pack-apk-common-opts

Yugang/pack apk common opts
[webapi] Rename DLNA to MediaServer

- Rename DLNA to MediaServer

Impacted tests(approved): new 0, update 0, delete 0
Unit test platform: [Tizen IVI]
Unit test result summary: pass 42, fail 16, block 9
Merge pull request #810 from yunxliu/yunxliu/webapi/dlna_rename

[webapi] Rename DLNA to MediaServer
Add json formatter tool
Merge pull request #841 from yugang/yugang/json-formatter

Add json formatter tool
Merge pull request #837 from zqzhang/csstest-basic-bold.ttf

[sample] Remove unreferenced font
Format all suite.json with json_formatter tool

Signed-off-by: Hao yunfeix <yunfeix.hao@intel.com>