Added line and stacked columncharts
adding dummy file
no more dummy
vsr:metadata added
using each column as series
fixed columnchart to work with properly for ieee
better labels
d3linechart adapted to figure2 query. Also, added metadata to paths
change color functin in stacked bars
change color to bar
added prefixes in line chart
added prefixes in line chart to svg
added grddl:transformation
fixing the tooltip
added points and tooltip to linechart. Fixing small issue in column chart
Merge branch 'master' into ieeevis-paper

Conflicts:
	lib/Haanga/lib/Haanga/Extension/Filter/D3linechart.php
	lib/Haanga/lib/Haanga/Extension/Filter/D3stackedcolumnchart.php
start of improved logging
Added logging class

GUI implemented

TODO: GUI needs work
Merge branch 'logging'
removed visualizations from ieeevis