Eliminate redundant plugin categories
environment -> sensors and print -> printing
btw. convert files to utf8
Move all mail plugins to category 'mail'
Exclude plugin file meminfo.in from category grep
This plugin introduces a bunch of new categories that are useless and disturbing for gallery navigation.
Example graphs for the plugin gallery
Insert example graph images into plugin gallery
Move courier plugins from category 'other' to 'mail'
btw. convert to utf8
Automatically override local stored plugins with newer versions from github
Fix iostat on FreeBSD

Current iostat says it shows the graph in MiBps, but it uses iostat's kiB output, so it's not. In this change I've changed the "MB" on the graph to "Bytes" and multiplied the iostat output (it's in kiB as stated by the comments and despite of this handled wrong) by 1024, so munin will correctly SI-scale the graph and numbers (2 MiBps will be 2 MiBps, not 2kiBps [MB] as now).
Also, I've changed the max values from 2 MBps (2000 kiBps) to 8 Gibps (1 GiBps), which is more sane nowadays.
MFM days are long gone.
Merge pull request #249 from bra-fsn/patch-1

Fix iostat on FreeBSD
Set graph_category
Scripts to build gallery for contrib repo
Category names may include numbers, dash and underscore
Category may include colon (as separator for subcategory)