Add VerticalBarchart to chart classes

ability to show a bar chart vertically
use class methods for drawing sepcific elements of the graph and
override them in the vertical version
Draw the axis after the values are drawn

axis should be on top of values instead of behind for better readability
Use verticalbarchart for detail transparency scores
Add interaction for transparency chart

update the subscore chart for the seletected country
Update transparency sub viz

hide axis, add axis text inside barchart
move labels to the right
place both visualisations in one line
Rename large multiples to point graph

better naming for the visualization
Add PointGraph visualization for exports from german gdp

closes #63
Text change in Schaedliche Waffenexporte Datenbeschreibung
Add more padding to circles
Rename indikatoren to use german translation

add another field for description, shown on mouseover
Add new class for Saferworld Sub Viz

new class for easier overwriting of mouseover and drawValue methods
add mouseover for showing of text description
Add description to saferworld sub viz

add pointer to barchart rect to indicate mouseover functionality
Merge branch 'master' into 78-transparency

Conflicts:
	source/data/security/transparenz/saferworld.csv
Update transparency country names

use translated country names
Make sure linechart is required before any subclasses are
Move out voronoi data generation to own function

needed if the data is different that it used to be for the linechart
Introduce area chart for easy stacked area charts

subclass from linechart to use all the features a lnechart got
including vornoi selection of points
use default data key values:
y and y0 for values
name for group name
Add military civil firedensfoerderung viz

use subnav concept for friedensfoerderung
Add legend
Merge pull request #97 from okfde/text-changes

Text change in Schaedliche Waffenexporte Datenbeschreibung