MainWindow: hide tick labels again
MainWindow: do not store posterior plots for individual time series
ebfret.plot: add labels for legend (and export)
IndexControl: set slider step size on init
plot.scale: allow scaling by matrix of weights
plot.state_dwell: a few more label-related edits
plot.state_stdev: label-related edits
ui.MainWindow.reset_analysis: tweak range
Moved some functions from ebfret.analysis.* to ebfret.*