make styles closer to CSS syntax

modules/core_styles/styles/buttons.otui

@@ -54,7 +54,7 @@ TopButton < UIButton
 MenuButton < UIButton
   color: white
   size: 40 18
-  align: center
+  text-align: center
   border-image:
     source: /core_styles/images/menu.png
     size: 64 24

modules/core_styles/styles/lineedits.otui

@@ -2,7 +2,7 @@ LineEdit < UILineEdit
   font: verdana-11px-antialised
   color: #aaaaaa
   size: 86 20
-  text margin: 3
+  text-margin: 3
   border-image:
     source: /core_styles/images/panel_flat.png
     border: 1
@@ -11,4 +11,4 @@ LineEdit < UILineEdit
     color: #aaaaaa88
 
 PasswordLineEdit < LineEdit
-  text hidden: true
+  text-hidden: true

modules/core_styles/styles/windows.otui

@@ -4,9 +4,9 @@ Window < UIWindow
   opacity: 255
   color: white
   background-color: white
-  head height: 20
-  head text align: center
-  move policy: free
+  head-height: 20
+  head-text-align: center
+  move-policy: free
   stackable: true
   border-image:
     source: /core_styles/images/window.png
@@ -22,12 +22,12 @@ Window < UIWindow
 MiniWindow < UIWindow
   font: verdana-11px-antialised
   size: 192 200
-  head height: 25
-  head text align: center
-  margin.top: 10
-  margin.left: 6
-  margin.right: 6
-  move policy: free updated
+  head-height: 25
+  head-text-align: center
+  margin-top: 10
+  margin-left: 6
+  margin-right: 6
+  move-policy: free updated
   border-image:
     source: /core_styles/images/mini_window.png
     border: 4