Lofar-h5plot

**Bugfixes**
* Fix weights not being passed for TEC like solutions (i.e. no frequency axis).

**Updates**
* Flagged slots are now plotted as red vertical lines in 1D plots and white squares in 2D plots.
* UI has minimize, maximize and close buttons on plots.
* Plots will now scale with window size.

**Bugfixes**
* Fix waterfall plots not having the correct orientation.
* Fix waterfall plots not handling scalar quantities correctly.

**Updates**
* Added waterfall plot functionality (2D time-frequency plots) for amplitude, phase and polalign.

**Bugfixes**
* Properly select values for directions other than index 0.

**Bugfixes**
* Fix an issue with TEC plotting

**Bugfixes**
* Fixed small string decoding issue.

**Updates**
* Rearranged project to upload to PyPi