enh: add icon for "Find Data"

Author: paulmueller

CHANGELOG

@@ -8,6 +8,7 @@
  - enh: convenience kwarg `since_time` for `search_dataset_via_api`
  - enh: implement `DBExtract.__repr__`
  - enh: remove unused "Sharing" page
+ - enh: add icon for "Find Data"
  - ref: replace `user_list` with `user_autocomplete`
  - ref: replace `search_dataset` with `search_dataset_via_api`
    in `APIInterrogator`; `search_dataset` is now only free text search.

dcoraid/gui/main.ui

@@ -24,6 +24,9 @@
        <number>0</number>
       </property>
       <widget class="QWidget" name="tab_browse_public">
+       <attribute name="icon">
+        <iconset theme="magnifying-glass"/>
+       </attribute>
        <attribute name="title">
         <string>Find Data</string>
        </attribute>