Test commit. Changed coupling of vpi.
Test commit

Code cleaning and VP intrinsic frequency changed.
Moved css and javascript parts to single files
Started to added plotting. It does not show work yet, but at least there is soothing graph-like in the bottom. And it's green!
Added local copy of d3.js. Plotting of relative phase works, but might still need some tweaking.
added index php
Added trial php.
Simplification of the index.php
Added hob parameters file.
Change CSS
Merge branch 'develop' of https://github.com/crowd-coordination/web-vpi into develop

Conflicts:
index.php
Index
Update index.php
Change of the HKB parameters
Change of the HKB equation to include the k parameter
Bibliography added in the index.php
Update of the CSS & Index.php
Random values.
Merge branch 'develop' of https://github.com/crowd-coordination/web-vpi into develop

Conflicts:
	js/vpi.js
Choosing k randomly.