Update ExportLatex.js to handle LaTeX special character.

* Update ExportLatex.js to handle LaTex special character: %${_}#&
* Close #22 

See merge request !24

25 js namespace

* Change the name space for the JavaScript code from `App` to `Dbui`.
* Close #25

See merge request !23

24 web2py 2.14.6

* Migrate to web2py 2.14.5 and pyDal 16.03
* Version is non backward compatible due to a change in pyDal
* Third party tools (jsduck, sencha, sphinx) can be run via a docker container.
* Close #24

See merge request !21