Fix account and tag searches with leading/trailing spaces (#5965)

* Strip leading & trailing spaces from account query

* Strip leading & trailing spaces from tag search

app/models/tag.rb

@@ -23,7 +23,7 @@ class Tag < ApplicationRecord
 
   class << self
     def search_for(term, limit = 5)
-      pattern = sanitize_sql_like(term) + '%'
+      pattern = sanitize_sql_like(term.strip) + '%'
       Tag.where('lower(name) like lower(?)', pattern).order(:name).limit(limit)
     end
   end