changelog, idle tracking
no more manual icon css (almost)

add code to generate css rules for boosts and badges, should only need
to manually add rules in special cases
add icon images batch 1
add icon attributes to batch 1
typo fixes
fix file names
untag glass extruder and sand purifier when inf

untag glass extruder and sand purifier when sand use is divided by infinity
Safety Net and Safety Blanket

Issue #543
Another new Boost

And a wording change to Safety Net
The rest of the new boost and issue #577
Discovery and monument counts in stats`

Reddit request
icon images batch 2
Reduce Mario Spam

Partial solution - some still remains #532
Merge pull request #572 from Unponderable/patch-1

untag glass extruder and sand purifier when max
Merge pull request #575 from waveney/wav20

Safety Net and Safety Blanket
Merge remote-tracking branch 'origin/ed-isnotawebdesigner'
add icon attribute for new icons
fix file names
typo fixes / special loot section icons

replace loot section icon with new, "non-plus" icons, this has broken
some "default" icon functionality for the time being
more typos / fix defaults

the fix for the defaults is a little bit ugly ("boost_boost"), but it
works and sections can now have a separate image from the boosts
themselves