This is the first implementation of a theme manager. It’s a rebased and
revisited version of #792.

After adding a card to the main or side, the search text will become
selected to easily start the next search

 * Refactored code out of common/ into servatrice/
 * added smtp client library
 * disable registration when connected
 * validate email address
 * send activation token via email

fixed welcome msg
added some articles
added database phrase to card updater
cosmetic changes to the description in edit sets

 * added missing bits of serverside code;
 * added fronted in client;
 * removed demo python scripts;

Game types are only available in online games.
This is the fastest fix.
Replays now work again.

+ The game type(s) is now displayed in the tab
+ Reformatted tab title

Added a max of 999 mins for the server shutdown to the gui.

It failed if the path contained spaces.

- removed space
- fixed wording

After more tinkering, it feels nice to have untap sound

Can now use
http://
https://
www.

No longer need to use the [url] tags to add **HTTPS** links. I want to
only link to "secure" site by default, hence only https.

Users can still use [url] tags if they want to.

The ENTIRE chat  code needs to be rewitten, as it is just packing more
code upon code. It can be done in another PR though. This just gets the
base working feature in place.

Updated to trigger on receive rather than send

+ Removed todo
+ linked test sound to the player joined sound

added "Make sure to enable the 'token set' in 'Edit sets...' dialog to display them correctly."

Die roll now has a logo as it is correctly connected to the parent.

Now uses the same as in the deck editor

+ added sound setting page
+ added sound setting icon
+ moved sound settings from interface settings

Added master volume

+ added master volume slider.
+ volume can be changed by sliding bar or by using the spin box
+ Preview of  volume will be played when dragging and releasing bar.

Added checks for qt4

Qt4 does not have support for setting the volume without some lengthy
work around, I have disabled volume control for qt4 users and have
mentioned that "Master volume requires qt5".

Updated sfx

+ removed all old sfx
+ added new end step and tap sound
+ tap/endstep sound has a timer on it to prevent spamming
+ test sound engine will now use endstep sound

Made end step sfx softer

end step felt too harsh

Added player joined sound

+ added a sound for when a new player joins a room

Updated

Was missing a sound when a player joins

Made end step softer

Made end step even softer

updated sound again

Updated default colors, darker, more modern, slick. Great feedback from
community.