updates for personnel-About Us page (#366)

additions, removals, and modifications as applicable in the Full Team by Site section. 
Also added stars for people in the directory gallery who are now emeritus. 
Note: did not add any additional names/mri scan images for new personnel in the gallery portion below, for now.

Author: juliebates

about_us.html

@@ -153,47 +153,49 @@ <h1 class="promo-text">Meet the ReproNim Team!</h1>
                      <ul>
                          <li><strong>Satra Ghosh   <em>Project Lead</strong></em>
                              <ul>
-                         <li>Rahul Brito    <em>Doctoral Student Researcher</em>
-                         <li>Dorota Jarecka <em>Postdoctoral Researcher</em>
-                         <li>Alisha Kodibagkar  <em>Research Associate</em>
+                         <li>Yibei Chen    <em>Postdoctoral Researcher</em>
+                         <li>Tek Raj Chhetri <em>Postdoctoral Researcher</em>
+                         <li>Dorota Jarecka  <em>Research Scientist</em>
                              </ul>
                      </ul>
                         </p>
                         <p>
                  <li><strong>Dartmouth College, Hanover, NH</strong>
                      <ul>
                          <li><strong>Yaroslav Halchenko <em>Project Lead</strong></em>
-                             <ul>
-                                 <li>Andrew Connolly   <em>Software Developer, System Administrator</em>
+                             <ul>        
                                  <li>Austin MacDonald   <em>Scientific Software Developer</em>
+                                <li>Vadim Melnick   <em>Scientific Software Developer, Consultant</em>
+                                 <li>Isaac To  <em>Scientific Software Developer</em>
                              </ul>
                      </ul>
                         </p>
                         <p>
                  <li><strong>McGill University, Montreal, Canada</strong>
-                         <ul>
-                             <li><strong>Jean-Baptise Poline    <em>Project Lead</strong></em>
+                     <ul>
+                        <li><strong>Jean-Baptise Poline    <em>Project Lead</strong></em>
                                  <ul>
-                             <li>Peer Herholz   <em>Postdoctoral Researcher</em>
-                             <li>Sebastian Urchs    <em>Scientific Software Developer</em>
+                             <li>Alyssa Dai   <em>Developer</em>
+                             <li>Arman Jahanpour   <em>Developer</em>
+                             <li>Brent McPherson    <em>Postdoctoral Researcher</em>
+                             <li>Sebastian Urchs    <em>Senior Scientific Software Developer</em>
                                  </ul>
                          </ul>
                         </p>
                         <p>
                      <li><strong>University of California at Irvine, Irvine, CA</strong>
                          <ul>
                              <li>David Keator   <em>Senior Investigator</em>
-                                 <ul>
-                                     <li>Nazek Queder   <em>Doctoral Student Researcher</em>
-                                 </ul>
+                                         
                          </ul>
                         </p>
                         <p>
                      <li><strong>University of California at San Diego, San Diego, CA</strong>
                          <ul>
                              <li><strong>Maryann Martone and Jeff Grethe   <em>Project Leads</strong></em>
                                 <ul>
-                                    <li>Fahim Imam  <em>Postdoctoral Researcher</em>
+                                    <li>Sean Hatton   <em>Research Data Analyst</em>
+                                    <li>Fahim Imam  <em>Assistant Project Scientist</em>
                                  </ul>
                           </ul>
                         </p>
@@ -259,7 +261,7 @@ <h3>Julie Bates</h3>
 
                 <div class="col-sm-3">
                <span class="testimonial-img"><img src="images/2019_fellows/brain.png" style="border-radius: 100%; display: block" alt="Image of Robert Buccigrossi" /></span> 
-                <h3>Rahul Brito</h3>
+                <h3>Rahul Brito*</h3>
 
                 </div>
 
@@ -354,7 +356,7 @@ <h3>Cynthia Kinahan* </h3>
 
                 <div class="col-sm-3">
                     <span class="testimonial-img"><img src="images/2019_fellows/brain.png" style="border-radius: 100%; display: block" alt="Image of Smruti Padhy" /></span> 
-                    <h3>Alisha Kodibagkar</h3>
+                    <h3>Alisha Kodibagkar*</h3>
                 </div>
 
                 <div class="col-sm-3">
@@ -396,7 +398,7 @@ <h3>Nina Preuss</h3>
 
                 <div class="col-sm-3">
                     <span class="testimonial-img"><img src="images/2019_fellows/brain.png" style="border-radius: 100%; display: block" alt="Image of Troy Sincomb" /></span> 
-                    <h3>Nazek Queder</h3>
+                    <h3>Nazek Queder*</h3>
                 </div>
 
                 <div class="col-sm-3">