Do not show initial modal to new, indie students ...

No need to confuse them with talk of enrollment/sektion codes
Scaffolding for showing stab feedback in student console
Corrected 'Cant mass-assign protected attribute' error in student registration

The error was occuring while processing geo-coding data and setting
city, state etc. for the newly created Account
Removed Deprecation warnings coming from layout files ...

Warnings coming due to render file: xyz call. Replaced
with render partial: xyz calls.
attr_accessor :login required
Added a temporary utility method to clone stabs for debugging purposes
Do not show anything when hovering on the slider ..

Only key presses in the stab grading panel
Move to next stab once graded ...

... and notify the grader when the last stab has been graded
preview.images for loadJson can now be an array of hashes ...

Each hash is of the form
  h = { path: relative_path, id: some_marker }

We need the latter format for optimizing stabs preview for students
Added a methods - remarks - to get remarks on all scans for this stab
Now recording quality as part of grading stabs
Temporarily assigning all stabs to Haddock
stabs/dated should return ungraded stabs by default

Else, if params[:type] = 'graded' then graded and otherwise all
Corrected logic in overlay.offsets
Changed tooltipcs in stabs grading
Minor edits to stabs/graded action and RABL
stabs/dated also used in student console
Added method to stats on stab quality for a given question ...

The stats are used render bar-graphs (viewable by students)
Group scans for stabs by stab-id
Allow processing of any json key within preview.loadJson

We still don't have a use-case for when preview.images is an
array of hashes. But it was anticipated and some code changes made.
Those changes have now been made generic