(mobile) DropDownMenu: fix for wrong padding and wrong top margin

[Issue] #1159
[Problem] More options list & Dropdown list -> shape
[Solution]
 - add missing padding to widget wrapper

Signed-off-by: Tomasz Lukawski <t.lukawski@samsung.com>

src/css/profile/mobile/common/dropdownmenu.less

@@ -1,4 +1,4 @@
-@dropdown-options-margin: 6 * @px_base;
+@dropdown-options-margin: 3 * @px_base;
 
 .ui-dropdownmenu-overlay {
 	opacity: 0;
@@ -182,6 +182,8 @@
 	z-index: 1201;
 	min-width: 168px;
 	max-width: 100vw;
+	padding: 3 * @px_base;
+
 	&.ui-dropdownmenu-options-vertical-margins {
 		margin-top: @dropdown-options-margin;
 		margin-bottom: @dropdown-options-margin;
@@ -190,15 +192,7 @@
 		visibility: visible;
 		overflow-y: auto;
 	}
-	&.ui-dropdownmenu-options-opened {
-		border-top: 1 * @px_base solid @color_dropdownmenu_list_group_stroke;
-		border-bottom: 1 * @px_base solid @color_dropdownmenu_list_group_stroke;
-	}
-	// top, bottom classes just describes direction in which menu is animated.
-	&.ui-dropdownmenu-options-top {
-	}
-	&.ui-dropdownmenu-options-bottom {
-	}
+
 	&.ui-dropdownmenu-options-opening.ui-dropdownmenu-options-top .ui-dropdownmenu-options {
 		.animation(open-to-top 300ms);
 	}

src/css/profile/mobile/themes/dark.variables.less

@@ -55,7 +55,7 @@
     @button-background-contained:  @color-white;
     @text-input-invalid-color: #ff6666;
 
-    @dropdown-menu-options-border: 3 * @px_base solid #525252;
+    @dropdown-menu-options-border: 0.75 * @px_base solid #525252;
     @dropdown-menu-options-background: #3d3d3d;
     @dropdown-menu-options-color: @color-white;
 

src/css/profile/mobile/themes/light.variables.less

@@ -53,7 +53,7 @@
 
     @button-background-contained: @_black;
     @text-input-invalid-color: #b00020;
-    @dropdown-menu-options-border: 1 * @px_base solid #cccccc;
+    @dropdown-menu-options-border: 0.25 * @px_base solid #cccccc;
     @dropdown-menu-options-background: @popup-background-color;
     @dropdown-menu-options-color: @_black;