Table widget for Tabulated trapezium, Tabulated rectangle and YZ shape cross sections

[leendertvanwolfswinkel]

In the current implementation, the height-width pairs input for "Tabulated trapezium" and "Tabulated rectangle" shapes is given in a multiline text widget:

One of the new shapes we want to introduce (YZ) also needs table input, but for this shape (width, height) makes more sense. I feel that using the same multiline text widget for both of these makes it too complicated. Instead, a table widget would be more appropriate.

• [x] If the selected shape is "Tabulated trapezium" or "Tabulated rectangle", the table widget should have the 2 columns: Height [m] and Width [m].
• [x] If the selected shape is "YZ", the table widget should have the 2 columns: Y [m] and Z [m].- [ ] It should be easy to add a new row, e.g. by pressing Enter when in the bottom-right cell of the table
• [x] It should be possible to copy-paste table data from e.g. MS Excel into the widget
• [x] If the table has a lot of rows, it should become scrollable

[leendertvanwolfswinkel]

Probably makes sense to fix #98 at the same time

[leendertvanwolfswinkel]

I tried the following:

• Add a cross section location
• Set its cross section shape to 'YZ'
• Paste this into the table:

  0,7.77
  0.17,7.62
  0.4,7.55
  0.88,7.35
  1.57,7.1
  2.34,6.79
  3.32,6.65
  4.23,6.63
  4.47,6.64
  5.1,6.67
  5.83,6.8
  7.16,7.09
  8.14,7.42
  8.57,7.57
  8.94,7.77

• Save to spatialite
• Load from spatialite
• Cross section location's table is empty

Also some minor issues:

• In the dropdown widget to select the cross section shape, please capitalize YZ (i.e., 'YZ' instead of 'Yz'
• Widgets that are enabled do not always have their labels enabled, e.g.:
• Inverted egg: 'height' should also be disabled

[ldebek]

@leendertvanwolfswinkel Issues reported above should be fixed now. Feel free to have another round of testing.