update pshell explorer and data import, misc. improvements

FEATURES

- pshell: convert scienta data to true counts
- pre-process: add gauss2_reduction data reduction function
- anglescan: add set_contrast and normalize_strip_phi functions
- explorer: show info about multi-region scans
- documentation: add detailed instructions for angle-scan processing

BUGFIXES

- explorer: fix attributes notebook
- pshell: fix progress bar
- elog: increase the number of accepted attachments

doc/html/globals_s.html

@@ -32,7 +32,7 @@
  <tr style="height: 56px;">
   <td id="projectalign" style="padding-left: 0.5em;">
    <div id="projectname">PEARL Procedures
-   &#160;<span id="projectnumber">rev-distro-1.4.0-0-g80a01f2</span>
+   &#160;<span id="projectnumber">rev-distro-1.4.0-1-g0a436db-dirty</span>
    </div>
    <div id="projectbrief">Igor procedures for the analysis of PEARL data</div>
   </td>
@@ -165,6 +165,9 @@ $(document).ready(function(){initNavTree('globals_s.html','');});
 <li>select_dataset()
 : <a class="el" href="pearl-pshell-import_8ipf.html#abb4afdef6ae4476c25a1ff77b17266c3">pearl-pshell-import.ipf</a>
 </li>
+<li>set_contrast()
+: <a class="el" href="pearl-anglescan-process_8ipf.html#a666dab03bb2e97ffef81cea450184d42">pearl-anglescan-process.ipf</a>
+</li>
 <li>set_panel_attributes()
 : <a class="el" href="pearl-elog_8ipf.html#a39a1f418c8a2f9a5e4ab976827d8efca">pearl-elog.ipf</a>
 </li>
@@ -246,7 +249,7 @@ $(document).ready(function(){initNavTree('globals_s.html','');});
 <!-- start footer part -->
 <div id="nav-path" class="navpath"><!-- id is needed for treeview function! -->
   <ul>
-    <li class="footer">Generated on Tue Jul 4 2017 11:17:32 for PEARL Procedures by
+    <li class="footer">Generated on Thu Sep 21 2017 12:35:04 for PEARL Procedures by
     <a href="http://www.doxygen.org/index.html">
     <img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.8.11 </li>
   </ul>