Remove superfluous grid line for log scale.

The code removed in this change added an additional entry to the list of
labels, causing the top of the graph to be extended by self.logBase. As
the corresponding labels have already been drawn, the result is a
graph with n+1 gridlines for n labels. Removing this addition resolves
the issue.

Fixes #235.
Fix bug where SVG output would sometimes have extra </g> tag
JSON.parse the escaped JSON for initialState.

This resolves the issue of dashboards not loading when passed as /dashboard/<name>.
Attempting Categorization

Taking a stab at categorizing the tools. While I appreciate the list, it has never been particularly useful for me to browse the mixed bag alphabetically; Typically, I am in need of a particular type of tool, and categorization would be more helpful to me.

Also, since it was giving me eyebleed from all of the headers and listing each title twice, I turned them all into RST Definition Lists.

Some opinions were made (monitoring, CollectD/Ganglia/Sensu, the Other category). Sue me.

More bikeshedding could be had, but not terribly useful (chars-per-line, etc)
Fixing missing indentation

Somehow three lines either were missed, or somehow mucked up in the copy.
Patch for 'normalize' that crashed with empty set

When a function is called on an empty serie, the function 'normalize'
encoutered an error.
Now it raises a custom error that is tracked by the function 'evaluateTokens'
and returns []
adding test function for normalize()
Use url() and import views in URL definitions
Add configurable URL prefix
Handle STATIC_URL with prefix
Resolve all URLs or prefix them with baseUrl
Load future url on Django 1.4
Disable this for now
Properly handle empty prefix
Merge branch 'master' into fix/reverse
Update reverse call to use named URL
Add a lint tox target, fix all import issues
Fix some whitespace issues
add pow() function, convert squareRoot() and invert() to use safePow() instead, refs #803
fixing merge conflict by adding in a new tool, but preserving the original intent of categorizing the tools