Revert "Image is now sended to the server when external sync is requested. Not intelligent for now (upload every time when one time is neccesary)"

This reverts commit 4ca081e400f96250fa68957fd9262d1a652e1d87.

t
Fix
Merge branch 'dev' of https://github.com/Mendroyxx/FeatureApp into SynchroExt
Back to precedent PHP file for upload on server. MaxId fixed
Fix merge
Synchro to external server ok. But not on ecn server
Merge pull request #68 from SebastienCohendet/SynchroExt

Synchro ext