Duration of Lifetime Savings graph does not match period of study

[eethann]

See #123 for more information. The Lifetime Savings graph is showing many years past the end of the study, so is declining when it should not.

[eethann]

[eethann]

This one is a must fix.

[shrutimehta13]

year period corrected in lifetime graph.

here /technologies/concentratedsolar showing Nan and declining graph @eethann that could be a separate issue