Webstart popup windows 11656

[will-moore]

Fixes webstart security popup in main webclient window by linking to /webstart/ homepage instead: see https://trac.openmicroscopy.org.uk/ome/ticket/11656

To test:

• On Windows, Firefox open /webclient/ - see that Java plugin doesn't appear in toolbar.
• Click webstart button in toolbar - should open a popup window with /webstart/ - Check that webstart works OK.
• Note that /webstart/ page doesn't have webclient and webstart displayed equally - this was confusing.
• The webclient link will close the webstart window (if it has been opened from webclient).
• If you open a new Tab and go directly to /webstart/ the webclient link and text is slightly different - will open webclient in same window.

[mtbc]

I hope that it's okay that when I start webstart Insight I am warned that it will be blocked in a future Java security update because the JAR manifest doesn't have the Permissions attribute. (Is this ticketed?)

[mtbc]

Indeed gets rid of the other scary message and otherwise works as described. Good to merge.

[manics]

@mtbc https://trac.openmicroscopy.org.uk/ome/ticket/11582

[will-moore]

Yeah - this is what I see on windows - looks pretty scary!

[joshmoore]

So the "good to merge" stands despite the scariness, right?

[mtbc]

Right, the scariness is for a different PR. (-:

[will-moore]

@joshmoore I think this is good to merge

[joshmoore]

Cool, thanks. /cc @gusferguson / @hflynn -- don't know if there are any docs or tutorials that need to be updated.

[joshmoore]

--rebased-to #1840