broken links fix

README.html

@@ -24,7 +24,10 @@
 ### check
 
 ```
-node_modules/broken-link-checker/bin/blc -r http://bridgesuncc.github.io
+node_modules/broken-link-checker/bin/blc -r  http://bridgesuncc.github.io | tee /tmp/report
+node_modules/broken-link-checker/bin/blc -r http://bridgesuncc.github.io/navbar.html | tee -a /tmp/report
+node_modules/broken-link-checker/bin/blc -r http://bridgesuncc.github.io/tutorials/Tutorial_Header.html | tee -a /tmp/report
+grep -v ───OK /tmp/report #note that these are not dashes before OK
 ```
 
 

events.html

@@ -47,7 +47,7 @@ <h3 class = "sep_heading">BRIDGES Events</h3>
       <li>Apr 16, 2020: <a href="workshops/2020/CS1_online_04_16/">Online CS1 workshop</a></li>
       <li>Apr 3, 2020: Our paper <a href="publ/beckman_ccsccp2020.pdf">"Engaging Early Programming Students with Modern Assignments Using BRIDGES"</a> was supposed to be presented at CCSC CP 2020.</li>
 
-      <li>May 13-20, 2019: STEM for ALL 2019 video presentation on <a href="https://stemforall2019.videohall.com/presentations/1368">Bringing Real-World data and Visualization into CS courses</a>.</li>
+      <li>May 13-20, 2019: STEM for ALL 2019 video presentation on <a href="https://stemforall2019.videohall.com/presentations/1368.html">Bringing Real-World data and Visualization into CS courses</a>.</li>
       <li>Mar 1, 2019: SIGCSE 2019 NSF Showcase presentation on Retaining and Engaging CS Majors Using BRIDGES</li>	      
       <li>Mar 1, 2019: SIGCSE 2019 Poster on <a href="https://dl.acm.org/citation.cfm?id=3287536">Applying Project-Based Learning for an Online Object-Oriented Systems Course</a>.</li>
       <li>Feb 28, 2019: SIGCSE 2019 Demo on <a href="https://dl.acm.org/citation.cfm?id=3293758">Building Simple Games With BRIDGES</a>.</li>

opportunities/opportunities.html

@@ -73,7 +73,7 @@ <h2><u>What does BRIDGES Provide? </u></h2>
 real-world data used as part of the project. See for example a 
 <a href = "http://bridgesuncc.github.io/assignments/data//29-SortingBenchmark/README.html"> Sorting example </a>,
 <a href = "http://bridgesuncc.github.io/assignments/data//9-ShortestPathOSM/README.html"> Shortest Path </a> example using Open Street Map data.
-<a href = "https://github.com/BridgesUNCC/bridges-assignments/tree/master/assignmentdb/60-Quadtree-CityData">Spatial Data Structures (Quadtrees)</a>
+<a href = "https://bridgesuncc.github.io/assignments/data//60-Quadtree-CityData/README.html">Spatial Data Structures (Quadtrees)</a>
 example for spatial search.
 </li>
 <p>