[wrt] Remove manual cases compare with auto cases in 5 suites
[wrt][XWALK-1886] fix-xwalk-1886

Change assert_true() to async_test()
Impacted TCs num(approved): New 0, update 2, deleted  0
Unit test platform: [tizen]
Unit test result summary: Pass 2 , Fail  0, Blocked 0
[wrt][XWALK-1540]Fix XWALK-1540 update tcs for wrt-rtcore-tizen-tests

Impacted TCs num: New 0, Update 1, Delete 0
Unit test PLatform: [Tizen]
Tizen test result summary: Pass 1, Fail 0
[behavior][misc][XWALK-1691][XWALK-1811]Fix XWALK-1691/1811

Impacted TCs num(approved): New 0, update 2, deleted 1
Unit test platform: [tizen]
Unit test result summary: Pass 2 , Fail 0, Blocked  0
[misc] Add a usecase for content

- Fail reason: when input different parameter of directoryId, the content.find() method return same file list.
- Fail reason: when delete file on the device, content.find() also return the old file list.

Impacted TCs num(approved): New 1, Update 0, Delete 0
Unit test Platform: [Tizen IVI]
Test result summary: Pass 0, Fail 1, Blocked 0
Merge pull request #308 from kangxu/kangxu/wrt/wrt-rtbin-tizen-tests/removeManualCases

[wrt] Remove manual cases compare with auto cases in 5 suites
Merge pull request #313 from linshen/fix-xwalk-1540

[wrt][XWALK-1540]Fix XWALK-1540 update tcs for wrt-rtcore-tizen-tests
Merge pull request #309 from linshen/fix-xwalk-1886

[wrt][XWALK-1886] fix-XWALK-1886 update tct-rt01-wrt-tests
Merge pull request #317 from linshen/fix-xwalk-1691/1811

[behavior-misc][XWALK-1691][XWALK-1811]Fix XWALK-1691/1811
[misc-uiautomation] Add reference file for css3-flexiblebox
[misc-uiautomation] Add reference file for html5-canvas
Merge pull request #319 from JianfengXu/xujf/misc/content

[misc] Add a usecase for content
[misc][XWALK-1585] Fix case bug for webaudio

- Change the way to create AudioContext object

Impacted TCs num(approved): New 0, Update 1, Delete 0
Unit test Platform: [Andriod]
Andriod test result summary: Pass 1, Fail 0, Blocked 0
[misc-uiautomation] Add reference file for css3-style
[wrt][xwalk-890] Update wrt-manifest-tizen-tests to use allpairs

Unit test platform: [tizen]
Unit test result summary: auto test tool, no UT.
[webapi][XWALK-1860] Fix unavailable external files

 -Replace unavailable external files with tinyweb links in 12 TCs
 -Remove two TCs which cannot be fixed with tinyweb
 -Fail reason: load image in widget policy does not support

 Impacted tests (approved): New 0, Update 12, Delete 2
 Unit test platform: Tizen IVI
 Unit test result summary: Pass 8, Fail 4, Block 0
Merge pull request #328 from Honry/Honry/Fix-xwalk-1680

[webapi][XWALK-1860] Fix unavailable external files
[webapi][XWALK-1848] Update description for webapi/3dtransforms

Impacted tests(approved): New 0, Update 6, Delete 0
Unit test platform: [Android]
Unit test result summary: Pass 6, Fail 0, Block 0
Merge pull request #329 from minxhuang/hm/xwalk-1848

[webapi][XWALK-1848] Update description for webapi/3dtransforms
[webapi][XWALK-1909] Fix the wrong path of case entry when running "webapi/background"

Impacted tests(approved): New 0, Update 2, Delete 0
Unit test platform: [Android]
Unit test result summary: Pass 2, Fail 0, Block 0