* Create pre-commit with ESLint

* add vue-eslint-parser

* Add prop-name-casing and script-indent to the eslint rule.

* Update Javascript and Vue files with the proper style

* Comment out ESlint pre-commit first to udpate styles

* Use ESlint to format the Javascript and Vue files.
Strongly recommended rules applied.

* Add google format package

* modify overlay and offset chart view interplay problem

* resolve frontend fecs problem

* resolve the hover circle problem for histogram

* modify the color of multiple lines in scalar

* adjust the frontend code

* modify san template

* adjust histogramHelper code

* reslove fecs code style problem

* modified something in frontend directory

* modified gitignore

* remove node_modules

* modify the data format for graph

* add label for each edge in the graph data formate

* merge scalars and image

* update histogram layout and style