Merge branch 'release/2.5.0' into develop
Fix setup redirect, config.php.dist and script
Separate data acquisition scripts into own repository: https://github.com/K-Ko/PVLng-scripts
Add ability to define custom commands at start via prepend.php file
Force numeric channels to have only numerics in submitted value
Add Wunderground weather template and channel
Change performance colletion to memory table
Adjust creation of memory tables to only once per session
Add AOP based debugging system
Add hover effect to data table rows
Fix session handling for Ngninx, $_SERVER[HTTPS] ist set every time, but empty
Fix application logic
Adjust application flow logic
Add HTML5 Page Visible API to charts view
Adjust API
Adjust JSON handling for loading failed files
Adjust frontend scripts
Adjust cahche TTL usage, use native APC TTL handling
Update Highcharts to v3.0.10
Minor fixes