finish testreport_ecco.jl + improve docs and repo + baseline5 results

• rename input_itXX, results_itXX as input_other, test
• finish test/testreport_ecco.jl implementation + fixes
• docs : improve and separate out analyses.rst
• code, input : remove legacy headers (dating back to CVS era)
• test : convert test report results from mat to csv for baseline2
• test : add test report results for baseline5 (rerun of v4r5 candidate 2 by GF w MITgcm 68g)

synchronized to MITgcm checkpoint68o

Also includes :

• docs update
• update / fix readthedocs config
• update code/*.F
• input/dowload_files.jl to download inputs from Dataverse
• results_itXX/testreport_ecco.jl (WIP) to test results in Julia

synchronized to MITgcm checkpoint67z

See https://github.com/MITgcm/MITgcm/releases/tag/checkpoint67z

Documentation updates

• Documentation updates (README.md, docs/)
• Add directions for release 1 (docs/ECCOv4r1_mods.md).
• Add directions for release 3 (docs/ECCOv4r3_mods.md).

revamped sphinx documentation

v1.7

remove duplicated line

added sphinx & readthedocs documentation

• added sphinx / readthedocs documentation (docs/ directory; hosted at eccov4.readthedocs.io)
• README.md was revised to point to the readthedocs document and to improve presentation

Updates and improved documentation of on-premise and cloud recipes

v1.5

screen capture from Jan. 2017 run

streamlined recipe for AWS / cfncluster

v1.4

cosmetic changes

add recipe for AWS / cfncluster

v1.3

- update introduction

synchronized with MITgcm checkpoint66c

• scripts to setup system tools and compile ECCO v4 r2

• alternative SIZE.h to compile for 192 cores, etc.
• update EXF_OPTIONS.h