Update less.js to 1.3.3 re-release

Fixes https://github.com/cloudhead/less.js/issues/1095
See https://github.com/cloudhead/less.js/commit/c06d8498777f5042e161d5d21d1972854330518f
Bumped postal.js to version 0.8.3
Update JSXGraph to 0.97.0
Added sketch.js 1.0.0 (bis)
1.9.5

- Improvements to the ticker's fps capping algorithm

- Worked around an iOS bug that prevents requestAnimationFrame from working correctly in certain [relatively rare] situations. Falls back to setTimeout() in that scenario.

- Fixed issue that could cause zero-duration tweens/callbacks at the very beginning of a timeline not to fire their onReverseComplete if the playhead lands on a SUPER small value, like 0.000001 seconds.

- Adjusted the behavior of TimelineMax's tweenFromTo() method so that it seeks to the initial from() spot. That way, events/callbacks are suppressed which seems like the more natural behavior.

- Improved KineticPlugin, making it compatible with BezierPlugin internally

- Minor improvements in CSSPlugin, mostly around 3D calculations
adding codemirror v.3.12.0

Source: http://codemirror.net/
Minified with uglifyjs
codemirror v.3.12.0

Added codemirror.css v.3.12.0
Source: http://codemirror.net/
Revert "adding codemirror v.3.12.0"

This reverts commit 5c89bc9845cfae4042ea893fdec628d055ac9d9d.
Revert "codemirror v.3.12.0"

This reverts commit fff75be578c492a2aae99881b1dd81e4b5590fca.
adding codemirror v.3.12.0

Source: http://codemirror.net/
Minified with: uglifyjs
Backbone-relational version bump to 0.8.5
Fix JSXGraph version information
Rename jsxgraphcore.min.js to jsxgraphcore.js
Update history.js to 1.8

Repository and maintainer has changed so updated package.json.

The directory layout change a bit, this time i've just unpacked
the tarball and create a simlink to the minified version.
Add AngularJS 1.0.6
Fix typo in history.js package
Add opal (http://opalrb.org)
kiss.animate.min.js added
add x-editable 1.4.4. Source taken from https://github.com/vitalets/x-editable/tree/1.4.4
Update reveal.js to 2.3