Merge pull request #638 from lucianobaraglia/master

Password input in advanced app signup [ci skip]
Refactored console commands.
Fixed JUI asset bundles.
Refactored Sort.
Added SortTest
Added LinkSorter.
added support for HTTP verb PATCH

To provider better REST API support PATCH method is added which is used
for partial updates, while a PUT should only update whole record.

issues #303 and yiisoft/yii#2664
Directory structure updated in README.md
Removed ListPager and refactored LinkPager and LinkSorter.
Merge pull request #644 from maximal/patch-1

Directory structure updated in README.md
Fixes issue #643