fixed space bar alignment

Author: Vasyl Vavrychuk

web/keyboard.css

@@ -7,7 +7,7 @@
 .ui-keyboard-button-endrow { clear: left; }
 .ui-keyboard-widekey { min-width: 4em; width: auto; }
 .ui-keyboard-space { width: 15em; }
-.ui-keyboard-space span, .ui-keyboard-empty span { font: 0/0 a; text-shadow: none; color: transparent; } /* see http://nicolasgallagher.com/another-css-image-replacement-technique/ */
+.ui-keyboard-space span, .ui-keyboard-empty span { text-shadow: none; color: transparent; } /* see http://nicolasgallagher.com/another-css-image-replacement-technique/ */
 .ui-keyboard-preview-wrapper { text-align: center; }
 .ui-keyboard-preview { text-align: left; margin: 0 0 3px 0; display: inline; width: 99%;} /* width is calculated in IE, since 99% = 99% full browser width =( */ 
 .ui-keyboard-keyset { text-align: center; white-space: nowrap; }

web/webdriver-app.js

@@ -512,6 +512,7 @@ function VirtualKeyboardWidget() {
       KEY_BKSP = 'Bksp',
       KEY_TAB = '\u21e5 Tab',
       KEY_ENTER = 'Enter',
+      KEY_SPACE = ' ',
       KEY_SHIFT = 'Shift',
       KEY_UP = '\u21d1',
       KEY_DOWN = '\u21d3',
@@ -523,6 +524,7 @@ function VirtualKeyboardWidget() {
   labelToKeyMap[KEY_BKSP] = webdriver.Key.BACK_SPACE;
   labelToKeyMap[KEY_TAB] = webdriver.Key.TAB;
   labelToKeyMap[KEY_ENTER] = webdriver.Key.ENTER;
+  labelToKeyMap[KEY_SPACE] = ' ';
   labelToKeyMap[KEY_SHIFT] = webdriver.Key.SHIFT;
   labelToKeyMap[KEY_UP] = webdriver.Key.UP;
   labelToKeyMap[KEY_DOWN] = webdriver.Key.DOWN;
@@ -559,7 +561,7 @@ function VirtualKeyboardWidget() {
       'esc': KEY_ESC,
       'bksp': KEY_BKSP,
       'enter': KEY_ENTER,
-      'space': ' ',
+      'space': KEY_SPACE,
       'up': KEY_UP,
       'left': KEY_LEFT,
       'right': KEY_RIGHT,