No need to fold since gmetad returns upper-case
Lock the cache file while writing to prevent partial reads
Merge pull request #245 from pcpiela/master

Added the capability to control the timezone used to display rrd metric graphs
Merge pull request #246 from cddude229/lock-cache-file

Lock the cache file while writing to prevent partial reads
Merge pull request #247 from cddude229/xml-folding

No need to fold since gmetad returns upper-case
Enable custom time range selection by drag select for view and host metric group graphs.
Merge remote branch 'upstream/master'