Correction of bugs in the script used to create GIS layers for country borders in West and Central Africa

Changes in function grplot: possibility to change ylim and now draws a color bar instead of vertical lines to show the lock-down effect.

Resolved conflicts with Facundo's updates. Had to remove two items from the plan and include them in thz template because the plan could not generate them.

Tried to improve the pdf version of Euro report to harmonize the font (now Palatino) between text and plots.Regular updates of the text and code to account for epidemiological chnages.

Report Europe: data frame country_data with variables at country level. Substitute multiple independent variables with non-explicit names.

Report Europe: use deaths_by_ctry_dt computed at the plan level rather than creating intermediate objects.

Light versions of GIS layers for European country borders and European region of interest (generated with rgeos::gSimplify(), tol=0.025).

Light versions of GIS layers for European country borders and European region of interest (generated with rgeos::gSimplify(), tol=0.025)