chore: keep the footer at the bottom on more pages

Should be in 27b8d25 commit.

Address to #1204

Author: php-coder

Diff for: src/main/webapp/WEB-INF/views/collection/estimation.html

@@ -59,7 +59,7 @@
 					</ul>
 				</div>
 			</div>
-			<div class="row">
+			<div id="content" class="row">
 				<div class="col-sm-5 col-sm-offset-3">
 
 					<h3 class="text-center" th:text="#{t_collection_of(${ownerName})}">

Diff for: src/main/webapp/WEB-INF/views/collection/info.html

@@ -58,7 +58,7 @@
 					</ul>
 				</div>
 			</div>
-			<div class="row">
+			<div id="content" class="row">
 				<div class="col-sm-12">
 
 					<h3 class="text-center" th:text="#{t_collection_of(${ownerName})}">

Diff for: src/main/webapp/WEB-INF/views/series/search_result.html

@@ -63,7 +63,7 @@
 					</ul>
 				</div>
 			</div>
-			<div class="row">
+			<div id="content" class="row">
 				<div class="col-sm-12" th:with="search_results=#{t_search_results}">
 					<h3 class="text-center" th:text="${#strings.capitalize(search_results)}">
 						Search results

Diff for: src/main/webapp/WEB-INF/views/site/events.html

@@ -59,7 +59,7 @@
 					</ul>
 				</div>
 			</div>
-			<div class="row">
+			<div id="content" class="row">
 				<div class="col-sm-12" th:with="suspicious_activities=#{t_suspicious_activities}">
 					<h3 class="text-center" th:text="${#strings.capitalize(suspicious_activities)}">
 						Suspicious activities