[content] update architecture diagram that includes acme freight changes + mobile

[ashumz]

• add mobile app to diagram
• remove bluemix and ibm branding
• add loopback logo to ERP system

[rvennam]

Exiting one:

https://ibm.box.com/s/tnqdftafgax20u87ec0okei8mpbyhp37

[svennam92]