使用 dayjs 替换 moment.js

[x-cold]

1、moment.js 安全问题，moment/moment#4163
2、体积相较之下减少 90% 以上；
3、特性满足需求；

[x-cold]

优化前：

> webpack --progress --hide-modules --config webpack.build.min.js && webpack --progress --hide-modules --config webpack.build.js
 18% building modules 72/73 modules 1 active .../N3-components/src/style/default.lessNode#moveTo was depreca
ted. Use Container#append.Hash: 5c5ffd2a379527e2e4a0
Version: webpack 2.7.0Time: 12137ms
        Asset    Size  Chunks                    Chunk Names
 index.min.js  504 kB       0  [emitted]  [big]  index
index.min.css  122 kB       0  [emitted]         index 18% building modules 72/73 modules 1 active .../N3-components/src/style/default.lessNode#moveTo was depreca
ted. Use Container#append.
Hash: f3a7695b07d9934216e8
Version: webpack 2.7.0
Time: 8799ms
        Asset     Size  Chunks                    Chunk Names
     index.js  1.41 MB       0  [emitted]  [big]  index
index.min.css   122 kB       0  [emitted]         index

优化后

18% building modules 72/73 modules 1 active .../N3-components/src/style/default.lessNode#moveTo was deprecated. Use Container#append.
Hash: 9a22112f812d27615216
Version: webpack 2.7.0
Time: 11243ms
        Asset    Size  Chunks                    Chunk Names
 index.min.js  276 kB       0  [emitted]  [big]  index
index.min.css  122 kB       0  [emitted]         index
 18% building modules 72/82 modules 10 active ...3-components/src/Locale/n3Validate.jsNode#moveTo was deprecated. Use Container#append.
Hash: b11e7f43ca4121eacea2
Version: webpack 2.7.0
Time: 8309ms
        Asset    Size  Chunks                    Chunk Names
     index.js  870 kB       0  [emitted]  [big]  index
index.min.css  122 kB       0  [emitted]         index