Updated translations

[WAIT] added webpage to about window

Re-Dockified the game & replay review areas

Sounds on buddy login & logout.

Updater: Disable download button when download starts

Client update implementation

Remove unneeded debug in servatrice

Fix pixmap usage in pictureloader

fix #1765

Add Sounds on buddy login & logout.
Add Files: buddy_join.wav; buddy_leave.wav

new description (match io page)

match new description wording from io page

Misc speedups in card database

reworked parts of readme

Oracle: follow redirects

mtgjson now secure

fix replay progress bar

Remove 'syntax = proto2' from .proto files.

- added small 'new user guide' at top
- reworked 'downloads' part
- changed layout of 'translation' part
- removed server list in favor of gh pages link (server list can be found there)
- switched to https everywhere (zlib not supported yet --> added hint)

That marker is only recognized by pb3-compatible compilers, meaning that
tools which are otherwise compatible with our files break on them.
Notably, this includes hprotoc (for haskell).

Updated ToC with 'Downloads'

added gh pages url

Token coordinates

Token PT shown in create related dialog

Enable HiDpiPixmaps for Qt5