There are multiple ways to upload photos from mobile devices and desktop.

This picture was taken on an iPhone 5 and uploaded from the iPhone via full site access. This works the same way on desktop.

Click image for larger version. 

Name:	image.jpg 
Views:	818 
Size:	1.78 MB 
ID:	61920


Click the square button with the tree to insert an image.

Click image for larger version. 

Name:	image.jpg 
Views:	786 
Size:	66.1 KB 
ID:	61921



A pop up appears

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Name:	image.jpg 
Views:	783 
Size:	82.9 KB 
ID:	61925



Choose your file and hit upload file. It will insert some code like this.

Click image for larger version. 

Name:	image.jpg 
Views:	796 
Size:	101.4 KB 
ID:	61926


Voila, your picture appears inline like the ones above.