Py.Std tests now labelled XL, and few other changes in Tests/

They all take >1 s; the formfactors test takes >20 s

Integrate gui2 in BornAgain project structure

[ RUN      ] WidgetUtilsTest.WithTildeHomePath
/G/sw/ba/ThirdParty/GUI/qt-mvvm/tests/testview/widgetutils.test.cpp:39: Failure
Expected equality of these values:
  Utils::WithTildeHomePath(test_dir).toStdString()
    Which is: /G/sw/ba/build/test_output_mvvm
  expected.toStdString()
    Which is: ~build/test_output_mvvm
[  FAILED  ] WidgetUtilsTest.WithTildeHomePath (0 ms)
[----------] 1 test from WidgetUtilsTest (0 ms total)

[----------] Global test environment tear-down
[==========] 1 test from 1 test suite ran. (0 ms total)
[  PASSED  ] 0 tests.
[  FAILED  ] 1 test, listed below:
[  FAILED  ] WidgetUtilsTest.WithTildeHomePath

Reflectometry prototype migrated

Reduce manhattan deps

plot_utils supports environment variables NOSHOW, CMAP; example tests labelled "XL"

This is more UI standard than the combo in bottom right corner.

As a consequence, hide the always empty status bar (for all views) and with this win more space for relevant content.

* reduce indirections
* reduce redundancy
* implementations in analogy to sample view
* rm job view docks class (integrated into jobview)