Fixed an exception when adding a graphite function.

The error was that funcDef is just a string parsed from an event
like onMouseDown or something like that. This event is turned
into a function instance, and the function instance has
expected parameters and so forth. However, the number of
parameters was actually checked on the funcDef.

New config setting for graphite datasource to control if json render request is POST or GET (Closes #345)

Closes #333, New version availability check will now checks http://grafanarel.s3.amazonaws.com/latest.json if there is a new version. And the link now points to http://grafana.org/download

Merge branch 'feature/influxdb-add-where-conditions' of github.com:mavimo/grafana into mavimo-feature/influxdb-add-where-conditions

Increased resolution for graphite datapoints (maxDataPoints), now equal to panel pixel width. (Closes #5)

Conflicts:
	src/app/partials/influxdb/editor.html
	src/app/services/influxdb/influxdbDatasource.js

  for very short absolute ranges (Fixes #320)

unbind resize event during slideshow

This reverts commit 9fc93e28, reversing
changes made to 30bf8380.

Reload filters when loading page

This commit refreshes the dynamic filters when loading page.

Fixes documentation typo

Grafana needs hideLegend=false in graphite urls when show legend is selected for Graphite PNG

Changing behavior to always obey the show legend option in grafana. without hideLegend=false, grafana defaults to the graphite behavior of hiding the legend at (default 10) X number of series. Also should be checking scope.panel.legend.show.