Weather Graphs

Recent improvements:

• Improved the caching of data so the website can restart quickly (but if it was off for long it still needs to sync the data)
• Added a time range for "Yesterday"
• Added a warning if the data for the graphs is still syncing or needs syncing (this happens when the website is restarted)

TODO list:

• Periodic auto-refresh (if it doesn't hurt the server). For now you will have to refresh by hand
• Various TODOs shown on the graphs themselves
• Filtering/aggregating/smoothing data, dependant on time range (WIP)
• Make it more useable on mobiles (if needed)

Plus stuff I do as it occurs to me.