Improve exception handling for generated Tool Shed URLs.
Merged next-stable
Bugfix: Hadn't implemented clean way to iterate of collection element names in tools.
Perhaps stretching the definition of bugfix here to get this in next-stable.
Bugfix: Workflow editor mapping icon bug.
Bugfix: More left/right -> forward/reverse fixes.
Unit tests (would have prevented bug in 4044a2a and similar bugs).
Bugfix: Fix another attachable bug related to collections and multiple inputs (like 1882eff).
With unit tests that would have prevented both bugs.
Bugfix: Workflow editor would unnessecarily leave nodes in mapped over state when no connections force it.
Other small code harmonizations to do this cleanly.
Pack scripts.
Merge next-stable.
Fix dep_value being undefined at use.  Someone needs to look at the logic here, this is purely an operational fix preventing a crash -- there's logic that still needs to happen somewhere in the chain here.
merge next-stable.
Remove jStorage from Trackster requirements because it is not used.