Add a grid edit view

[cmungall]

This only makes sense for xsvs that have two vars, e.g. https://github.com/Planteome/plant-ontology/blob/mine-design-patterns/modules/part_whole.csv

• rows = var1 (here 'part')
• cols = var2 (here 'whole')
• cells = empty if no row in source csv. filled with iri/label if a row exists in source csv.

what would be awesome is to see the ontology relationships e.g. as dendrograms on each axis

[cmungall]

here is an example from the above. Obviously we'd use something like d3 or just angular datatables rather than md in taboggan

	shoot-borne root	secondary phloem	bract	seed coat	hypocotyl	flower	shoot axis	petal	ear inflorescence	aerial tuber storage parenchyma	plant ovary wall	nectary		petiole	leaf sheath	ray secondary xylem parenchyma	subterranean tuber storage parenchyma	sepal	tassel inflorescence	plant embryo	gametophore	shoot system	late wood	embryo sac	phyllome	tassel spikelet	axial system	sporangium wall	fruit	branch	secondary xylem	axial secondary xylem parenchyma	integument	root	primary phloem	phyllome lamina	ear spikelet	plant organ	secondary xylem parenchyma	leaf mesophyll	phloem	stamen	leaf lamina	tepal	scutellum	early wood	whole label	xylem	carpel	ray system	leaf	stem	filament	primary xylem
shoot system epidermis							shoot axis epidermis					nectary epidermis													phyllome epidermis																				scutellum epidermis
sieve tube element		secondary phloem sieve tube element																																	primary phloem sieve tube element
root epidermis	shoot-borne root epidermis
vascular bundle																																				phyllome lamina vein
shoot axis																					gametophore axis
plant organ						floral organ
portion of plant tissue																				portion of embryo plant tissue
glume																										glume of tassel spikelet											glume of ear spikelet
phyllome margin																																																			leaf margin
cardinal part of multi-tissue plant structure																																						cardinal organ part
sieve cell		secondary phloem sieve cell																																	primary phloem sieve cell
tuber cortex										aerial tuber cortex							subterranean tuber cortex
native plant cell																				embryo plant cell				embryo sac cell
leaf epidermis														petiole epidermis	leaf sheath epidermis																												leaf lamina epidermis
phyllome lamina tooth																																																			leaf lamina tooth
epidermis				seed coat epidermis							plant ovary epidermis		root epidermis									shoot system epidermis						exothecium					integument epidermis
phyllome lamina areole																																											leaf lamina areole
nucellus																													fruit nucellus
stamen epidermis																																																					filament epidermis
tracheary element																							late wood tracheary element								secondary xylem tracheary element															early wood tracheary element
xylem vessel																															secondary xylem vessel																							primary xylem vessel
plant structure																				embryo plant structure
cambial zone							shoot axis cambial zone																											root cambial zone
lamina														petiole lamina																								plant organ lamina
sieve element		secondary phloem sieve element																																	primary phloem sieve element
parenchyma cell																																							secondary xylem parenchyma cell
shoot axis epidermis																														branch epidermis
plant organ margin																																				phyllome margin
plant organ lamina																									phyllome lamina
stem epidermis					stem epidermis
phyllome lamina crena																																																			leaf lamina crena
secondary xylem parenchyma																											axial secondary xylem parenchyma																							ray secondary xylem parenchyma
parenchyma																															secondary xylem parenchyma
xylem vessel member																															secondary xylem vessel member																							primary xylem vessel member
intercellular space																																								leaf mesophyll intercellular space
secondary xylem parenchyma cell																ray secondary xylem parenchyma cell																axial secondary xylem parenchyma cell
part label																																															label
phyllome epidermis			bract epidermis					petal epidermis										sepal epidermis																								stamen epidermis		tepal epidermis					carpel epidermis		leaf epidermis
phyllome lamina lobe																																																			leaf lamina lobe
shoot meristematic apical cell																					gametophore meristematic apical cell
plant fiber cell																																									phloem fiber cell							xylem fiber cell
inflorescence meristem									ear meristem										tassel meristem
tracheid																															secondary xylem tracheid
secondary thickening meristem																																		root secondary thickening meristem																		stem secondary thickening meristem