Adds review and lesson heatmaps to the dashboard.
אלו כל גרסאות הסקריפט הראה רק גרסאות בהן בוצע שינוי קוד
Update custom icons
Heatmap: update icons
Heatmap: don't break on custom reviews
Countdown: add entry
Heatmap: add help buttons & account for day start when registering reviews
Heatmap: Fix mistake
Heatmap: load even when no reviews
Heatmap: fix oopsies
Heatmap: add option for kanji day labels
update css
prettier + change radical images from svg to png
remove jQuery datepicker
Fix icons
fix time in popper when dragging between dates
fix popper duration display
update review cache
update review cache url
new review cache url
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