Anti flood for game commands; fix #753

This reverts commit 4568adb4.

Update translations bits in CONTRIBUTING.md; fix #861

Private Chat Tab Update

Cleanup git links

Additionally, use the same name for “private chat“ in all menus (we had
“personal talk” and “direct chat“ before)

fix #811

Kick message no longer takes you to kicked tab

Fix for filter

updated contributing.md

fix for #749
+ You can now search for sets using lower case: "frf", "dtk", "rtr" and
so on.
+ You now need exact matches on set short and full names. "rtr" and
"return to ravnica" will work. "return" will not work.

Added optional card scaling setting

- fixed typos
- included labeled links

Resized game view columns

+ Users can now enable/disable the mouse over card scaling.

Script to add the first admin account

Updated user games window size

Added shortcut to clear chat

Previously all columns were the same width, making it cramped. I have
resized them to give a better initial width.

F12 will now clear the chat in the main chat.

fetched updated translations from transifex

Re-added some search and filter code

Set download hq images to false by default

Due to mtgimage being taken down we I have made a one time check that
will uncheck the hq image option.

I had previously removed some filtering code that would allow users to
filter cards using our filtering tools. This functionality has now been
re-added.

Fetched new translations from transifex