Reimplementation of table styles using the, now extendable, styles of MPS. Requires the commit 38131ef2b2f09db71647196c2f4fc5487c5cd60 (branch "extendableStyles" in https://github.com/slisson/MPS.git) in MPS.
style inheritance for styles on table elements
Merge branch '31_EAP1-25' into extendableStyles

Conflicts:
	languages/de.slisson.mps.tables/de.slisson.mps.tables.mpl
	languages/de.slisson.mps.tables/runtime/models/de/slisson/mps/tables/runtime/style.mps
Styles implementation updated to the latest MPS master version.
Merge branch 'extendableStyles' into 31_EAP1-25

Conflicts:
	languages/de.slisson.mps.tables/generator/template/main@generator.mps
migrated to MPS 3.1 EAP3 (135.584)
Migrated to MPS 3.1 EAP 3 (135.584)