Added About modal with last commit hash, moved some dialogs to lesionTracker package from viewerbase (OHIF-52)

Packages/lesiontracker/client/components/emailVerification/emailVerification.html

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+<template name="emailVerification">
+    <div id="emailVerification">
+        <div id="emailVerificationContent">
+            <h3>Verify Your Email Address</h3>
+            <p>We need to verify your email address. We've sent an email to <b>{{emailAddress}}</b> to verify your address. Please click the link in your email to continue.</p>
+        </div>
+    </div>
+</template>

Packages/lesiontracker/client/components/emailVerification/emailVerification.js

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+Template.emailVerification.helpers({
+    emailAddress: function() {
+        return Meteor.user().emails[0].address;
+    }
+});

Packages/lesiontracker/client/components/emailVerification/emailVerification.styl

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+#emailVerification
+  #emailVerificationContent
+    position: absolute
+    top: 0
+    bottom: 0
+    left: 0
+    right: 0
+    margin: auto
+    width: 60%
+    height: 20%
+    z-index: 100
+    border-radius: 5px
+    padding: 10px 20px 10px 20px
+    background-color: rgba(255,255,255,1)
+    outline: none