Remove lint from auxiliary JS files

[qed777]

JSLint on "The Good Parts" setting, applied to sagenb/data/sage/js/*.js but not notebook_lib.js. The latter will have its own ticket.

For now, I've disabled strict mode, since most (all?) current browsers don't yet have it.

Given the present architecture of the notebook JS library --- use lots of global variables, etc. --- I haven't implemented all of JSLint's suggestions. More generally:

"If you're writing javascript code, [JSLint](http://www.jslint.com/) is a really fine piece of software, too. You don't have to follow its recommendations blindly, but understanding what it says about your code can greatly improve your skills." -- http://jsbeautifier.org/

CC: @TimDumol

Component: notebook

Author: Mitesh Patel

Reviewer: Tim Dumol

Merged: sagenb-0.6

Issue created by migration from https://trac.sagemath.org/ticket/7863

[qed777]

Attachment: trac_7863-declare_vars_aux_js.patch.gz

Declare vars in functions, etc., in aux JS files. Depends on #7786. sagenb repo.

[qed777]

Attachment: trac_7863-declare_vars_aux_js_v2.patch.gz

Rebased vs. #7786 v11. Replaces previous.

[TimDumol]

comment:2

Looks good to me. Nice style changes.

[TimDumol]

Merged: sagenb-0.6

[TimDumol]

Reviewer: Tim Dumol