Added CMS_STRING_EXPANDER.

For now with basic implementation.
  It will be improved later

Added SEO related attribute in CMS_RESPONSE.
Added improved Contact module.
Added basic SEO module.

examples/demo/site/modules/contact/files/scss/contact.scss

@@ -0,0 +1,140 @@
+.contact-box {
+    background-color:#F2F7F9;
+    width:465px;
+    padding:20px;
+    border: 6px solid #8FB5C1;
+    -moz-border-radius:15px;
+    -webkit-border-radius:15px;
+    border-radius:15px;
+    position:relative;
+ 
+	h1 {
+		font-size:42px;
+	}
+	 
+	h2 {
+		margin-bottom:15px;
+		font-style:italic;
+		font-weight:normal;
+	}
+	 
+	label {
+		font-size:15px;
+		margin-bottom:2px;
+		display:block;
+	}
+ 
+	input, select, textarea {
+		width:100%;
+		font-size:15px;
+		border: 1px solid #CEE1E8;
+		margin-bottom:20px;
+		padding:4px;
+		&:focus {
+			border: 1px solid #AFCDD8;
+			background-color: #EBF2F4;
+		}
+	}
+	 
+	textarea {
+		height:150px;
+		resize: none;
+	}
+	 
+	span.required {
+		font-weight:bold;
+		color:#F00;    
+	}
+	 
+	input[type=submit] {
+		width: 100px;
+		background-color:#333;
+		color:#FFF;
+		border:none;
+		display:block;
+		float:right;
+		margin-bottom:0px;
+		margin-right:6px;
+		background-color:#8FB5C1;
+		-moz-border-radius:8px;
+		&:hover {
+			background-color: #A6CFDD;
+		}
+		&:active {
+			position:relative;
+			top:1px;
+		}
+	}
+
+	.message {
+		width:95%;
+		margin:25px 0px;
+		padding:10px;
+		display:block;
+		border:solid 1px #ccc;
+		border-radius:8px;
+		-webkit-border-radius:8px;
+		-moz-border-radius:8px;
+
+		&.hidden {
+			display: none;
+		}
+
+		&.error {
+			border-color: #E58E8E;
+			background-color:#FFE6E6;
+		 
+			li {
+				padding:2px;
+				list-style:none;    
+				&:before { content: ' - ';    }
+			}
+			#info {
+				font-weight:bold;
+				&:before { content: '';    }
+			}
+		}
+
+		&.success {
+			border-color: #83D186;
+			padding-top: 25px;
+			background-color:#D3EDD3;
+		}
+	}
+ 
+	.req-field-desc {
+		font-style:italic;
+	}
+	 
+	/* Remove box shadow firefox, chrome and opera put around required fields. 
+	 * It looks rubbish. 
+	 */
+	input:required, textarea:required {
+		-moz-box-shadow:none;
+		-webkit-box-shadow:none;
+		-o-box-shadow:none;
+		box-shadow:none;
+	}
+	 
+	/* Normalize placeholder styles */
+	 
+	/* chrome, safari */
+	::-webkit-input-placeholder {
+		color:#CCC;
+		font-style:italic;
+	}
+	 
+	/* mozilla */
+	input:-moz-placeholder, textarea:-moz-placeholder {
+		color:#CCC;
+		font-style:italic;
+	}
+	 
+	/* ie (faux placeholder) */
+	input.placeholder-text, textarea.placeholder-text  { 
+		color:#CCC;
+		font-style:italic;
+	}
+
+}
+