Edited several sentences after a third-party review

Fixes the "Card preview window gets stuck and can't be removed" issue by saving the cardname, instead of getting it back from the popup (with possible issues with case sensitivity). Also closes an old popup when a new is created.

 * Always install “release” plugins
 * install only plugins actually used

Missing tooltip

We previously parsed only .cpp files, but some strings are inlined in
header files.

ucfirst(setCode): requires oracle re-run
reorder columns
rename the “short name“ column as “set code“
ensure proper casting for releaseDate and sortKey fields (refs 00a5ed0b)

Added a couple extra pixels in the chat. Make it look a little less
squished.

Before: http://imgur.com/7U6oe82
After: http://imgur.com/C8gGpDY

[REVIEW]
Links now have a blue underline to better indicate they are clickable.

Preview: http://imgur.com/gQZEv4I

Added the same functionality to the server tab

Can now join a room by highlighting a room and pressing ENTER. Works
nice with arrow navigation.

Can now double click on a room in the lobby to join

[REVIEW]
Added a white mask to cards that are being dragged.

Preview: http://webmup.com/1we4W/

Let oracle add a basic TK set in cards.xml
Unify all the code previously using the string literal “TK”

Added "order key", "set type" and "release date" columns
Use a proxy model to sort the table
made the dialog wider accordingly