[embedding][XWALK-2381] Change loadAppFromManifest mode to sync and improve pack.sh and loadUrl

Impacted tests(approved): new 0, update 1, delete 0
Unit test platform: [Android]
Unit test result summary: pass 84, fail 18, block 4
[sample] Remove tinyweb impact test and fix style issue

 Impacted TCs num: New 0, Update 5, Delete: 2
 Unit test Platform: Android
 Unit test result: all tests run well
[usecase-webapi] Remove two unused subcase tags for usecase

Impacted TCs num(approved): New 0, Update 2, Delete 0
Unit test Platform: [Andriod]
Unit test result summary: Pass 2, Fail 0, Blocked 0
Merge pull request #807 from JianfengXu/xujf/usecase/subcase

[usecase-webapi] Remove two unused subcase tags for usecase
Merge pull request #771 from zhuyongyong/yongzhu/embeddingAPI-tests/loadUrl

[embedding][XWALK-2381] Change loadAppFromManifest mode to sync and improve pack.sh
[sample] Replace upstream resources with self created

 Impacted TCs num: New 0, Update 2, Delete 0
 Unit test Platform: Android
 Unit test result: Pass 2, Fail 0, Block 0
adjust the tag order to the same with others
Merge pull request #798 from Honry/Honry/sample-remove-tinyweb

[sample] Remove tinyweb impact test and fix style issue
 Rename pic name to keep consistency
Merge pull request #815 from Honry/Honry/sample-replace-upstream-resources

[sample] Replace upstream resources with self created
[embedding][XWALK-2238] Add and update test cases for calling JS function and using XHR requests in XWalkView.

- Add test 2 cases for calling JS function with load and using XHR requests in XWalkView.
- Update 1 case for calling JS function with evaluateJavascript.

Impacted tests(approved): new 2, update 1, delete 0
Unit test platform: [Android]
Unit test result summary: pass 3, fail 0, block 0