multi_threaded_plotting_widget.py: fix some wrong in resolving conflict when merging to master, save pref_order to be used when zoom in

combine get wf plot info to get chan plot info

Closes #112

See merge request !131

write new mseed that use record_reader for fast and simple data

See merge request !134

display tracking info when start reading new files

Closes #102

See merge request !127

save plot as a file

Closes #60

See merge request !106

tps scrollbar, label's position, color, height for each

Closes #88

See merge request !136

Fix bug Event DS not plotted

Closes #111 and #105

See merge request !121

Fix gps lk unlk plotting - coloring, positioning label

Closes #109

See merge request !126

Fix DSP Clock Diff channel not display

See merge request !129

report and skip if can't read a file in RT130

Closes #114

See merge request !130

Fast MSEED read

See merge request !132

set GPS channels height to 0 to not be plotted; set plotType and height for EX channels to be plotted

create plotting channel processors in the preference order; remove checking for GPS channel, it should be set in DB to not plot those channels

fix bug no ruler showup when no TPS data

Closes #113

See merge request !125

Fix previous plot still showing when re-plotting after zooming in

See merge request !115

separate  data at gaps/overlaps

Closes #100

See merge request !119

Showing gap bar in waveform widget

Closes #91

See merge request !117