Add a dashboard

Currently the dashboard allows users to get a quick overview of the
status of jobs they're interested in, but more will be added,
e.g. viewing all your jobsets or all jobs of which you're a
maintainer.

src/sql/hydra.sql

@@ -532,6 +532,19 @@ create table AggregateConstituents (
 );
 
 
+create table StarredJobs (
+    userName      text not null,
+    project       text not null,
+    jobset        text not null,
+    job           text not null,
+    primary key   (userName, project, jobset, job),
+    foreign key   (userName) references Users(userName) on update cascade on delete cascade,
+    foreign key   (project) references Projects(name) on update cascade on delete cascade,
+    foreign key   (project, jobset) references Jobsets(project, name) on update cascade on delete cascade,
+    foreign key   (project, jobset, job) references Jobs(project, jobset, name) on update cascade on delete cascade
+);
+
+
 -- Cache of the number of finished builds.
 create table NrBuilds (
     what  text primary key not null,