Reopen connection if socket failure

Missed from #879

Rounder logo corner

Default to one player

Before:

After:

I think the majority of players use this feature for
goldfishing/practicing. Defaulting to one player for convenience.

Added Mull to the server whitelist

Reinstates hidden cards being hidden; fix #884

Mullling through 2 hands will give a flood warning, a user thought this
should not happen. It is very similar to drawing cards, which is in the
white list.

Fixed accidental +/- of counters when using middle click menu

Refactored code and made lines cleaner

Before:

After:

Reworked a bit mentions/tags support in chat view; fix #791

tray icon is now hidden and then removed

Fixed order of the counters

Previously if you middle click on a counter (life/mana) and then click
away, depending on the button clicked, the counter would +/-.

I have added a fix to make sure the mouse is over the counter to change
it.

Previously had - numbers at the top and + at the bottom.
This feels like it makes more sense.

I noticed that sometimes I would have lots of icons in the sys tray. I
would have to mouse over them to make then be removed. This also happens
with some other programs too. I have added some code to hide() the sys
icon when the client is close, it seems to be helping with the issue.
Hard to reproduce, might also only be a windows issue.

Fix double popup on delete pics

Set cmc to 0 if not set; fix #669

Misc Startup fixes

Avoid error “QIODevice::read: device not open”

The check was inverted. LoadStatus::Ok = 0, so only when
db->loadCardDatabase() returns 0 we know the card database path is
correct

Fix 633

Fix #670

Requires #889

Additionally, remove an unneeded split() + join() call on every card
text

fix server deck storage; fix #744

Cast to target from hand

extracted new strings

Users can now target from their hand. This will cast the card and point
to the target.

Updated settings chat settings cog