More refactoring
Added filtering to the inspect-graph legend selection list
Hide the "Now" button in the custom time datetimepicker
Added option to hide the "Now" button
Add filtering to legend selection list
Add filtering to inspect-graph legend selection list
Add a check that ignores null datasets
Fixed line/stack toggle for jQuery 1.9
Updates for jQuery 1.9
Incorporate cowyn #141 request for handling "NaN" values in export operations, and update the inspect graph functionality accordingly.
Merge pull request #158 from pcpiela/master

Changes to Inspect-Graph and custom time selection