New logo for changed tab

ctrl-click to add a card to a selection.

Add a play face down context menu item when in the hand zone.

Increased default pixmap cache

Fix zip support in oracle under win32; fix #736

Translation updates to support Transifex; fix #651

 * ignore .tx folder
 * cmake: when UPDATE_TRANSLATIONS=ON, extract new strings only to the
english translation file.
 * added info in CONTRIBUTING.md
 * updated english translations

Added modifier key to quick PM

Set to download HQ images by default

more Translation Status Updates

- add link to translation faq in the wiki
- force more space between the images
- updated the picture links

Did you change any names from "oracle_ents" to "oracle" within transifex @ctrlaltca?

Ctrl + click on a user name to PM

Translation Status Updates in Readme.md

- add separate links to different translation files (cockatrice_en.ts & oracle_en.ts) if you click one of the statistics
- added transifex icon with link to cockatrice project
- text changes

Refreshed the look of the default pawns

Game list informs better of what spectators can do

Based on feedback, allow for shortcut for specs to view hands

Spectator viewing options

Updated tab alert icon

"see hands" -> "see everything"