Merging in Andrew's work so far on progress and blocking dialogs

open #163
open #170

Squashed commit of the following:

commit ec7edb58ca
Author: Henry <akhenry@aitutaki.ndc.nasa.gov>
Date:   Mon Oct 5 10:39:06 2015 -0700

    Rename dialogSeverity to messageServity for reuse with notifications

commit d20abe01dd
Author: Henry <akhenry@aitutaki.ndc.nasa.gov>
Date:   Fri Oct 2 16:40:29 2015 -0700

    Fixed docs

commit 227da18498
Author: Henry <akhenry@aitutaki.ndc.nasa.gov>
Date:   Fri Oct 2 16:27:41 2015 -0700

    Added semicolon

commit 22d424f96e
Author: Henry <akhenry@aitutaki.ndc.nasa.gov>
Date:   Fri Oct 2 16:26:29 2015 -0700

    Fixed code errors

commit 2c77c3647c
Author: Henry <akhenry@aitutaki.ndc.nasa.gov>
Date:   Fri Oct 2 16:24:01 2015 -0700

    Initial commit of blocking dialog service with test code to demonstrate usage

platform/commonUI/dialog/res/templates/blocking-message.html

@@ -0,0 +1,30 @@
+<style>
+    .severity-error {
+        color: #d9534f;
+    }
+    .severity-info {
+
+    }
+    .time-estimate {
+        color: darkgray;
+    }
+    .dialog-content {
+        margin-top: 5em;
+    }
+</style>
+<mct-container key="overlay">
+        <div class="abs top-bar severity-{{ngModel.dialog.severity}}">
+            <div class="title">{{ngModel.dialog.title}}</div>
+        </div>
+        <div class="abs outline">
+            <div class='abs contents l-dialog dialog-content'>
+                <div class="hint">{{ngModel.dialog.hint}}</div>
+                <br />
+                <div ng-hide="ngModel.dialog.progress === undefined" style="background-color: darkgray; width: 100%; height: 1em;"><div ng-show="ngModel.dialog.progress > 0" style="color: #2e2e2e; background-color: lightgray; text-align: center; min-width: 2em; width: {{ngModel.dialog.progress}}%">{{ngModel.dialog.progress}} %</div></div>
+                <div class="time-estimate" ng-hide="ngModel.dialog.progressText === undefined">{{ngModel.dialog.progressText}}</div>
+            </div>
+        </div>
+        <div class="abs bottom-bar">
+            <span ng-repeat="dialogAction in ngModel.dialog.actions"><input type="button" value="{{dialogAction.label}}" ng-click="dialogAction.action()"></span>
+        </div>
+</mct-container>