Logging and cleanups

Add and configure log4j instead of the System.* prints and clean up the
code a bit.
Remove useless file
Turn down default log level
Some more logging cleanups
Merge branch 'slaViolations' into visualization
Remove old TODOs
elastictyManager: Change to service

Change from manually instatied class to service.
Move costs calcualtion to datacenter
Track costs and work around sla list bug
elastitcyManager: Fix costs unit

Costs are tracked per hour so use that as unit for the x value
Dump costs JSON to files

Use GSON to convert the cost lists to json and write them out to temp
files.
Track and save total costs as well
Add HTML5 based visualizer

Add a HTML5 script that takes the 3 files as input and renders a chart using
them as input (minute / costs in $).
Style fixes
visualization: Do not create total costs data

This can be computed from the sla and energy data when generating
the graph.
Merge branch 'slaViolations' into visualization

Conflicts:
	cloudSimulator/src/main/java/simulation/ElasticityManager.java
Use new SLAViolationAlgorithm
Merge branch 'visualization' into slaViolations

Conflicts:
	cloudSimulator/src/main/java/algorithms/SLAViolationAlgorithm.java
Commit