Detailed statistics page

[nagyf]

The application should contain a detailed statistics page. The user can view detailed information about the selected sensor on this page, and analyze the data.

Requirements:

• Be general, so only 1 page implementation must handle all sensors
• Show the current values
• Show historical data
• Show a linechart, displaying the last 1 month data by default
• The user must be able to filter the data by date ranges (predefined, and also custom ranges)