New generator to simulate a temporal graph

Solved a problem with the left button. This was under the other divs (z-index in the css)
Added: locale constant

New view: Network graph life cycle: Show a lifecylce of a network graph. there are two files. one with the events (edges) and one with the nodes.
 - The life cycle is shown with a bar to navigate. The is loaded statically.
 - Upload data to test the view
Merge remote-tracking branch 'origin/devel' into devel