Fix TPS plot being too low after the first data set.

Fix the bug by resetting the bottom position of the TPS axes every time a new data set is loaded.

Closes #73 (closed)

requested review from @ldam

changed the description

approved this merge request

added 3 commits

• a5c8b2b1...c3d3a2ef - 2 commits from branch master
• f5c55f3f - Reset TPS plot bottom between data sets

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merged

mentioned in commit 3f06208b