Add properly IO handling on close.
Log start.sh to /var/log/mobiperf
Log initialize.sh to /var/log/mobiperf
Log stop.sh to /var/log/mobiperf
Merge pull request #160 from salarcon215/master

Log Mobiperf startup scripts to /var/log
Merge pull request #159 from opentechinstitute/master

Add properly IO handling on close.
Hongyi Yao: add UDP burst measurement, including client app, udp server and the GAE part
Hongyi Yao: add UDP Burst measurement. Includes client, udp server and GAE
Hongyi: add progress bar, change PRR to loss rate, update UI so that the user can set more parameters
Hongyi: quick fix on check-in server
Hongyi: add seq number checking, create a wrapper for serializing and deserializing UDP packet, fix bugs
Hongyi: a quick fix
Hongyi: show user-friendly phrases and data, change out-of-order metric and add a expand/collapse button for UDP settings, maximum interval need to be discussed
Hongyi: fix downlink bug in server and have a better way to check timeout
Hongyi: fix bug
Hongyi: add udpburst validation (currently not working)
Hongyi: bug fix
Hongyi: bug fix
Hongyi: update version number and commit for code review
Hongyi: fix code review comment, ready for next code review