* 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

* fix the tooltip index error

* frontend add graph

* frontend add image for graph, images, histogram update

* add graph get url; fix scalar

* modify theme color

* modify right config theme color

* modify right config theme color

* delete the large graph.png

* delete console

* scalars frontend basically done

* frontend rename common/fun to util

* add images, scalar config

* add expandpael arrow

* fix scalars tooltip display problem

* modified something in frontend directory

* modified gitignore

* remove node_modules

commit eb6d0cce
Author: superjom <superjom@gmail.com>
Date:   Mon Dec 25 19:48:28 2017 +0800

    code format

commit 353e1028
Author: superjom <superjom@gmail.com>
Date:   Mon Dec 25 19:47:46 2017 +0800

    restore

* scalars frontend basically done

* frontend rename common/fun to util

* init logdir runs tags and scalars interface

* add debug

* add one mock data

* add dir server

* move frontend to server

* optimizer python package

* add mock data

* add back result encode

* use application/json as Response type

* rm .DS_Store

* update mock tags

* update mock data