use the term ecosystems instead of habitats
Change footer to read 'mapping toolkit'
replace instances of 'habitat' with 'ecosystem'
further swaps of habitat to ecosystem
re-order list of ecosystems
merged Tims-minor-edits and fixed conflicts
change instances of 'habitat' for 'ecosystem'
replace instance of 'habitat' with 'eccosystem'
replace instance of 'habitat' with 'eccosystem'