Modified the textual content

Modified following pages -

1. Aim
2. Objective
3. Theory
4. Procedure
5. References
6. Quiz pages

v1.0.1: added experiment-descriptor.json

Merge pull request #4 from virtual-labs/dev

Dev

Production

Minor fix. (#2)

* Added quizzes.

* Basic setup including documentation (theory, etc).

* Graphics partially complete. Also some animation.

* Added water and soil graphics and rotation animation.

* SEO tool testing.

* Fixed link issue.

* Added breadcrumb to performance page. Restricted performance testing to testing env.

* SEO tool testing.

* Added few more animation steps.

* Animation almost done.

* Animation completed.

* Final fixes to animation. Basic setup for logic and graph. Some code clean up.

* Added logic.

* Minor fixes.

* Added link to water content experiment as well as procedure.

* Added references.

* Removed tool testing change.

* Added explanations for quiz answers.

* Typo fixes.

* Typo fixes.

* Removed excess images.

* Code review fixes.

* Update main.css