Drop flashcanvas

Let's drop flashcanvas, which we use for rendering charts with MSIE 8
and older. I've tested it a bit and in none of the uses it works
properly, so it really does not work as a drop in replacement for native
browser support and it would probably need some adjustment in our code.

Also it is problematic from licensing point of view as we do not ship
source for it js/canvg/flashcanvas.swf.

Signed-off-by: Michal Čihař <mcihar@suse.cz>
Revert "Avoid using hard-coded argument separator, see https://sourceforge.net/p/phpmyadmin/bugs/3733"

This reverts commit 36e544ce9ed59a0770c77b35869fea47445ad5dd.

Signed-off-by: Marc Delisle <marc@infomarc.info>
Translated using Weblate (Spanish)

Currently translated at 100.0% (2749 of 2749)
Merge pull request #887 from nijel/remove-flashcanvas

Drop flashcanvas
Translated using Weblate (Spanish)

Currently translated at 100.0% (2749 of 2749)
Translated using Weblate (Telugu)

Currently translated at 12.2% (336 of 2749)
Merge remote-tracking branch 'origin/QA_4_1' into QA_4_1
Merge commit 'c406599995fc2a79d85e604114c69eb9f7411ae1'
Merge commit '519bd943d8f8368e761c4381d5b30bc988e62e6f'
Merge commit '8219b4cc9c5649e4b06f30130e5fe50c00dfc72b'
Merge remote-tracking branch 'origin/QA_4_1'