Add search filter to milestone page dropdown menu

Author: tyroneyeh

templates/repo/issue/milestone_issues.tmpl

@@ -51,6 +51,10 @@
 							{{svg "octicon-triangle-down" 14 "dropdown icon"}}
 						</span>
 						<div class="menu">
+							<div class="ui icon search input">
+								<i class="icon df ac jc">{{svg "octicon-search" 16}}</i>
+								<input type="text" placeholder="{{.i18n.Tr "repo.issues.filter_label"}}">
+							</div>
 							<span class="info">{{.locale.Tr "repo.issues.filter_label_exclude" | Safe}}</span>
 							<a class="item" href="{{$.Link}}?q={{$.Keyword}}&type={{$.ViewType}}&sort={{$.SortType}}&state={{$.State}}&assignee={{$.AssigneeID}}">{{.locale.Tr "repo.issues.filter_label_no_select"}}</a>
 							{{range .Labels}}
@@ -66,6 +70,10 @@
 							{{svg "octicon-triangle-down" 14 "dropdown icon"}}
 						</span>
 						<div class="menu">
+							<div class="ui icon search input">
+								<i class="icon df ac jc">{{svg "octicon-search" 16}}</i>
+								<input type="text" placeholder="{{.i18n.Tr "repo.issues.filter_assignee"}}">
+							</div>
 							<a class="item" href="{{$.Link}}?q={{$.Keyword}}&type={{$.ViewType}}&sort={{$.SortType}}&state={{$.State}}&labels={{.SelectLabels}}">{{.locale.Tr "repo.issues.filter_assginee_no_select"}}</a>
 							{{range .Assignees}}
 								<a class="{{if eq $.AssigneeID .ID}}active selected{{end}} item" href="{{$.Link}}?type={{$.ViewType}}&sort={{$.SortType}}&state={{$.State}}&labels={{$.SelectLabels}}&assignee={{.ID}}">