Liberia sitreps 154-156

Sitreps 152 and 153 are unavailable at source
155 and 156 do not have data for 'Cumulative admission/isolation'
Quoting
Quote '"Total death/s in confirmed, probable, suspected cases"'
Correct date (19th October 2014, not 18th October 2019)
Merge pull request #83 from pallih/master

Liberia sitreps 154-156