Fixed home page gauge sizing problem.
Fixed crash after entering food data in diet entry page.
Fixed unstablility and added dialog box upon click confirm from diet
page
Merged with Shenglan's Changes
Merge remote-tracking branch 'origin/shenglan' into jing

merge changes for binned distribution to work.
Disabled plot after timer expires. Fixed arff file dump data rewrite problem.
adjust peak detection threshold.
fixed data capture not started on button click. Peak detection is not blank now.
added arff file merge for running and walking.
commit all changes before merging.