Added script to split impstats logfiles into processable csv files

Python 2.6 or higher is needed to run the script
Started implementing stats chart generator
Finsihed implementing chart gemerator script for impstats.

CSV Data generated by statslog-splitter is needed.
To run the chart script, the following packages need to be installed:
	- python pip
	- python cairosvg
With pip install these packages:
	- pip install CairoSVG tinycss cssselect pygal
Finished statslog graph and splitter script.

Also added needed javascript files, so they can be included into the svg files.
This removes dependencies on external sources.

The statslog-splitter can now automatically generated SVG or PNG charts together
with an index.html in the output directory. This helps taking a quick view on all
generated stats data.
Added more command line options to customize the charts and their output
Added support for multiple regex commands, useful for parsing multiple rsyslog formats
Fixed Datetime detection
Merge remote-tracking branch 'andre/v7-stats-scripts'