Attempted fix of Tick Holds

NoteDataUtil::GetTotalHoldTicks() was not counting the last tick of
holds which ended on the last row of the song. Extended the range to
include the last row.

NoteDataUtil::GetTotalHoldTicks() was counting number of rows held, when
it should only count 1 regardless of number( at least to mimic pump )

Player::CrossedRows() was assuming a constant tick rate over the crossed
rows, leading to potentially inaccurate tick counts.

Pump holds were counting "HoldNote_Held" due to capitalization in the
metrics. Fixed metrics and made "IsGame" function case insensitive.
Merge pull request #137 from sigatrev/TickHolds

Attempted fix of Tick Holds