tools dropdown
replace DatasetSettingsNav and ViewNav with DatasetNav.
move dataset tool list into dropdown tools menu
isBasic attribute for tools
dataset tools menu
cake Se
Test that installed tool instances override default tool archetypes on
the dataset's tool menu.
Join "More tools" menu item to tool chooser.
Abstract isImporter()
change tools dropdown to be 3 ULs
Made ArchetypeMenuItem active.
less repugnant BETA flash in #header
slightly better styling for dataset tools menu
More intelligent view menu item handling.
Corrected the duplicate test.
Add tool archetypes in reader; fails because it still creates duplicates.
Merge branch '20130415-tool-dropdown' of github.com:scraperwiki/custard into 20130415-tool-dropdown
move tool icon monkeypatch out of tile view, and into model
use template to render dataset tool menu items
manual merge; pass instance id to template