add autocomplete input for student selection in journal filters, link creation, and links admin

db/init.sql

@@ -33,6 +33,7 @@ CREATE TABLE IF NOT EXISTS share_links (
   token VARCHAR(40) UNIQUE NOT NULL,
   name VARCHAR(200) NOT NULL,
   group_id INT REFERENCES groups(id),
+  student_name VARCHAR(150),
   date_from DATE,
   date_to DATE,
   created_at TIMESTAMPTZ DEFAULT now()

db/migration.sql

@@ -19,6 +19,7 @@ CREATE TABLE IF NOT EXISTS share_links (
   token VARCHAR(40) UNIQUE NOT NULL,
   name VARCHAR(200) NOT NULL,
   group_id INT REFERENCES groups(id),
+  student_name VARCHAR(150),
   date_from DATE,
   date_to DATE,
   created_at TIMESTAMPTZ DEFAULT now()