CR38-LACE css fixes, usability (refresh/ zoom-out), composer.json etc.

[nfreear]

Hi Martin,

I thought I'd best request this pull before the next batch of modifications ;). It deals with a number of bugs/enhancements. The most visible is perhaps the composer.json file.

• Bug #24/ #30, continue const SHORTCODE replacements / public-protected mods.
• Bug #38, CSS & other fixes - inc. height of "Geographical Report" map
• Bug #39, option to change "hypothesis" to "proposition" - only in visible text & public URLs [LACE-specific]
• Bug #40, crude refresh/ zoom-out function for map
• Bug #41, add a composer.json file

Note, there was some line-ending weirdness (https://github.com/IET-OU/wp-evidence-hub/commit/c4ee43ec5fed75f98eda4b7c0eb71f70bb6e23b2) that my colleague @fisharebest helped me fix.

I hope this is all OK. Many thanks,

Nick