add block button on incoming contact request

Accepting and discarding was already possible but not blocking
requests from somebody (banning it). This is now possible when
looking at an incoming contact request by clicking on a red button.

Change-Id: I89914beaf27713cabece02de107569b1e1f851d0
Reviewed-by: Olivier Soldano <olivier.soldano@savoirfairelinux.com>
diff --git a/stylesheet.css b/stylesheet.css
index 25443df..de3ee94 100644
--- a/stylesheet.css
+++ b/stylesheet.css
@@ -304,6 +304,13 @@
     font: 14px;
 }
 
+QPushButton#blockCRButton{
+    background-color: rgb(251, 72, 71);
+    border: 0px;
+    color: white;
+    font: 14px;
+}
+
 QPushButton#nextButton:hover, QPushButton#playButton:hover, QPushButton#clearHistoryButton:hover,
 QPushButton#checkUpdateButton:hover, QPushButton#doTransferButton:hover, QPushButton#photoButton:hover,
 QPushButton#takePhotoButton:hover, QPushButton#importButton:hover,
@@ -315,6 +322,11 @@
     background-color: #4dc6d6;
 }
 
+QPushButton#blockCRButton:hover{
+    background-color: rgb(252, 91, 90);
+}
+
+
 QPushButton#nextButton:pressed, QPushButton#playButton:pressed, QPushButton#clearHistoryButton:pressed,
 QPushButton#checkUpdateButton:pressed, QPushButton#doTransferButton:pressed, QPushButton#photoButton:pressed,
 QPushButton#takePhotoButton:pressed, QPushButton#importButton:pressed,
@@ -325,6 +337,9 @@
 QPushButton#sendContactRequestButton:pressed, QPushButton#acceptCRButton:pressed, QPushButton#discardCRButton:pressed{
     background-color: #34acbd;
 }
+QPushButton#blockCRButton:pressed{
+    background-color: rgb(219, 55, 54);
+}
 
 QLineEdit#usernameEdit:enabled, QLineEdit#passwordEdit:enabled, QLineEdit#confirmPasswordEdit:enabled,
 QLineEdit#pinEdit:enabled, QLineEdit#fullNameEdit:enabled{