Fixed #844, MathJax local cache
removed extra spaces
replace mathjax cdn with local copy

Merge branch 'local_mathjax_lib' of https://github.com/prateek05/rcloud into prateek05-local_mathjax_lib

Conflicts:
	htdocs/edit.html
	htdocs/view.html
Merge branch 'prateek05-local_mathjax_lib' into develop