Host display

Host names are written into the .tsv files. The display_tsv.html now
- reacts on window resizes
- shows host indicator on x axis plus a color legend

Shelll script compile_sample.sh added that takes a number
of .har files as input, uses basename (-.har) as name of site
and stores all results in folder "results".

display_tsv.html can be invoked with parameter "site" to select
a file among the result sets. E.g. 

compile_sample.sh ../http_samples/mnot/flickr.com.har
open display_tsv.html and append '?site=flickr.com' to the URL.