Change_suggestions

General: 
- One template file, instead of for each city one
	- If you really want them to differ, you could extract that to some xml-file (or json or DB) elsewhere instead of making a different php file for each one seperately
- Extracting strings (Eg. urls) to one file, it's like impossible 
	to move the site at this time.
- Creating a php-class for doing all the mongoDB requests and 
	parsing them to JSON-arrays that can be used in de data, so if you´d want to switch DB you'd just have to change one file.
- I'm not sure where the data/weather/weather.php and data/../air.
	php etc get run? 
- I believe the loadContent.js-file could be much shorter if 
	written more dynamically, (there are also a few weird thingies in here, I don't believe the refresh functions all work, 2 of the file extensions they're supposed to load are wrong)
- I think using PHP-Objects instead of JSON after downloading the 	
	info would be more readable
- I'm not sure all the data retrieving files still work, sites and 
	api have changed













/data/airquality/airquality.php
	- reads a whole HTML file (website) to get data, definitely not working anymore, why not 

/widget/instagram  not working because wrong url to php file