Added an sql script to create the tables. This is a temporary measure until I...

Added an sql script to create the tables.  This is a temporary measure until I can get a working alembic environment.

schema/create_ws_tables.sql

+create table workflows (
+    workflow_id serial primary key ,
+    name        varchar
+);
+comment on table workflows is 'A listing of the available workflows in the system.  ';
+comment on column workflows.workflow_id is 'the unique id of the workflow.  auto-generated.';
+comment on column workflows.name is 'a human-readable name for the workflow.';
+
+create table workflow_requests (
+    workflow_request_id serial  primary key ,
+    job_id              int,
+    workflow_id         int references workflows(workflow_id),
+    argument            json
+);
+comment on table workflow_requests is 'A listing of requests for workflows and te resulting job ids.';
+comment on column workflow_requests.workflow_request_id is 'the unique id of the request.  auto-generated';
+comment on column workflow_requests.job_id is 'the id of the job that this request generted in the ? system.';
+comment on column workflow_requests.workflow_id is 'the id of the workflow used in this request.';
+comment on column workflow_requests.argument is 'the argument(s) used for the workflow in this request.';
+
+create table workflow_request_files (
+    workflow_request_id int references workflow_requests(workflow_request_id),
+    file_id int references files(file_id),
+    primary key (workflow_request_id, file_id)
+);
+comment on table workflow_request_files is 'A man-to-many mapping table tracking which files were used for workflow requests.';
+comment on column workflow_request_files.workflow_request_id is 'the id of the workflow request.';
+comment on column workflow_request_files.file_id is 'the id of the file referenced by the workflow request.';
+
+create table capabilities (
+    capability_id   serial primary key ,
+    name            varchar not null ,
+    template_files  varchar,
+    steps           varchar not null
+);
+comment on table capabilities is 'A listing of the available capabilities in the system.';
+comment on column capabilities.capability_id is 'the unique id of the capability.  auto-generated.';
+comment on column capabilities.name is 'the human-readable name of the capability.';
+comment on column capabilities.template_files is '?';
+comment on column capabilities.steps is 'the unique id of the capability.  auto-generated.';
+
+create table capability_requests (
+    capability_request_id serial primary key ,
+    capability_id int references capabilities(capability_id),
+    user_id int not null ,
+    argument json
+);
+
+comment on table capability_requests is 'A listing of requests for capabilities, with the id of the requesting user.';
+comment on column capability_requests.capability_request_id is 'The unique id of the request.  auto-generated.';
+comment on column capability_requests.capability_id is 'the id of the capability being requested.';
+comment on column capability_requests.user_id is 'the id of the user requesting the capability.';
+comment on column capability_requests.argument is 'the JSON holding the details of the request.';
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