improve page loading performance about olcf-user-docs HOT 4 CLOSED

$ pipenv graph 
sphinx-rtd-theme==0.4.3.dev0
  - sphinx [required: Any, installed: 2.2.0]
    - alabaster [required: >=0.7,<0.8, installed: 0.7.12]
    - babel [required: >=1.3,!=2.0, installed: 2.7.0]
      - pytz [required: >=2015.7, installed: 2019.2]
    - docutils [required: >=0.12, installed: 0.15.2]
    - imagesize [required: Any, installed: 1.1.0]
    - Jinja2 [required: >=2.3, installed: 2.10.1]
      - MarkupSafe [required: >=0.23, installed: 1.1.1]
    - packaging [required: Any, installed: 19.2]
      - pyparsing [required: >=2.0.2, installed: 2.4.2]
      - six [required: Any, installed: 1.12.0]
    - Pygments [required: >=2.0, installed: 2.4.2]
    - requests [required: >=2.5.0, installed: 2.22.0]
      - certifi [required: >=2017.4.17, installed: 2019.9.11]
      - chardet [required: >=3.0.2,<3.1.0, installed: 3.0.4]
      - idna [required: >=2.5,<2.9, installed: 2.8]
      - urllib3 [required: >=1.21.1,<1.26,!=1.25.1,!=1.25.0, installed: 1.25.6]
    - setuptools [required: Any, installed: 41.2.0]
    - snowballstemmer [required: >=1.1, installed: 1.9.1]
    - sphinxcontrib-applehelp [required: Any, installed: 1.0.1]
    - sphinxcontrib-devhelp [required: Any, installed: 1.0.1]
    - sphinxcontrib-htmlhelp [required: Any, installed: 1.0.2]
    - sphinxcontrib-jsmath [required: Any, installed: 1.0.1]
    - sphinxcontrib-qthelp [required: Any, installed: 1.0.2]
    - sphinxcontrib-serializinghtml [required: Any, installed: 1.1.3]

[tag:0.4.3] $ git branch --contains 12458e0a6a2264df37ee6ae021e312f40cea36f9
  master