adding ability to delete configured searches

index.php

@@ -857,7 +857,10 @@
                     searches.map((search, search_index) => {
                         searches_table.append(`
                             <tr>
-                                <td><a href="javascript:edit_search(${search_index});" class="button button-primary">Edit</a></td>
+                                <td>
+                                    <a href="javascript:edit_search(${search_index});" class="button button-primary">Edit</a>
+                                    <a href="javascript:delete_search(${search_index});" class="button button-danger"><span class="dashicons dashicons-trash" style="margin-top: 4px;"></span></a>
+                                </td>
                                 <td>[corpora_search id="${search.slug}"]</td>
                                 <td>${search.name}</td>
                                 <td>${search.content_type}</td>
@@ -1037,6 +1040,12 @@
                 tb_remove()
             }
 
+            function delete_search(search_index) {
+                searches.splice(search_index, 1)
+                searches_field.val(JSON.stringify(searches))
+                setup_searches(corpus)
+            }
+
             function render_field_search_options(opts) {
                 let field_table = jQuery('#corpora_search_field_options_table')
                 field_table.empty()

js/corpora.js

@@ -321,6 +321,8 @@ class CorpusSearch {
             this.total_indicator = jQuery(`#corpora_search_table_${this.search.slug}_total_indicator`)
             this.table_header = jQuery(`#corpora_serach_table_${this.search.slug}_header`)
             this.table_body = jQuery(`#corpora_serach_table_${this.search.slug}_body`)
+
+            // setup column headers
             this.fields.forEach(f => {
                 if (f.show_in_searches) {
                     this.table_header.append(corporaTemplates.searchHeader({
@@ -337,12 +339,14 @@ class CorpusSearch {
             })
             if (this.fields.length > 1) this.field_selector.show()
 
+            // default search settings
             this.search_timer = null
             this.search_params = {
                 'page-size': this.search.page_size,
                 'page': 1,
             }
 
+            // setup default sorting, if configured
             if (this.search.default_sort && this.search.default_sort.field) {
                 this.search_params[`s_${this.search.default_sort.field}`] = this.search.default_sort.direction
                 jQuery(`th.corpora-search-table-header-cell[data-field="${this.search.default_sort.field}"]`).addClass(this.search.default_sort.direction)
@@ -398,6 +402,7 @@ class CorpusSearch {
                 }, 1000);
             })
 
+            // column header click for sorting
             jQuery('.corpora-search-table-header-cell[data-sortable=true]').click(function() {
                 let cell = jQuery(this)
                 let param = `s_${cell.data('field')}`