Implement some explicitRequirements on Morphic host

[tinchodias]

This has no test, and doesn't work:

s := BlSpace new.
s useMorphicHost.

self deny: s isVisible.
s show.
self assert: s isVisible.

self deny: s maximized.
s maximize.
self assert: s maximized.

self deny: s minimized.
s minimize.
self assert: s minimized.

[tinchodias]

This works but needs a test:

s := BlSpace new.
s useMorphicHost.

self deny: s isBorderless.
s borderless: true.
s show.
self assert: s isBorderless.

[tinchodias]

For a test:

s := BlSpace new.
s useMorphicHost.
s show.

"wait it is opened"

self deny: s isFullscreen.
s fullscreen: true.
self deny: s isFullscreen.

[tinchodias]

All the space properties must be tested before/after show, because the execution changes considerably either if the hostspace exists or doesn't exist.

[tinchodias]

Another test to add:

s := BlSpace new.
s useMorphicHost.
s show.

"wait it is opened"

self assert: s isResizable.
s resizable: false.
self deny: s isResizable.
s resizable: true.
self assert: s isResizable.