Merge branch 'dev-mvp-20200331' into 'release'

增加调试模式     codereviewer：张平

增加调试模式     codereviewer：张平

See merge request !147

build/webpack.base.conf.js

@@ -12,6 +12,7 @@ var useCssSourceMap = cssSourceMapDev || cssSourceMapProd
 
 
 module.exports = {
+    devtool: 'source-map',
     entry: {
         app: './src/main.js'
     },