More historical data

[HWTest]

It would be nice, if Meteohub could generate some historical data for display in the newest version of the Leuven template.

- last year max, min (highest and lowest values for the actual day of the year from the last year and the time of the values)
- records/today max, min (absolute highest and lowest values for the actual day of the year from all years and the year of the values)
- normals/today max, min (average values from the highest and lowest values for the actual day of the year from all years)

To make it more clear here is an example:

Today is 10.06.2015

- last year max, min
17,2°C (10:57) 11,8°C (05:42)
max, min values from 10.06.2014

- records/today max, min
31,0°C (2014) 7,0°C (2005)
absolute maximum from all 10.06. was in 2014 and was 31,0°C
absolute minimum from all 10.06. was in 2005 and was 7,0°C

- normals/today max, min
21,0°C 10,0°C
the average value from maximums of all 10.6.
the average value from minimums of all 10.6.

[FullFreeVersion]

Great .

[molelightn]

#push

@ admin, do you plan features like this?

Would be great.