Have the filterable tables use the right requests
Denormalize Request.status so it's easier to query against
Fix+clean up .models' __repr__ methods
Defer loading Request details until absolutely necessary
PermissionRequestListing uses a tuple of statuses instead of a callable

Lets the it be done purely with queries instead of filtering/mapping
User.permissions is now a hybrid property

The instance version returns a query so it can be further filtered
Convert Modifier.voided into a hybrid property
Rewrite Request.payout to rely more on the database
Rewrite Entity.has_permission

Rewritten to use Entity.permissions and the built-in capabilities of SQLAlchemy/the database.
Specify which columns/relations to load for request listings
Add Alembic auto generated files

Also add Alembic to requirements.txt
Fix up sys.path so evesrp can be found
Add location support in Killmails

Also added script for generating the location maps from a database dump.
Add system, constellation and region attributes to Request

Using Alembic for the migration.
Show the location a kill occurred
Merge branch 'systems-alembic' into sql-tuneup

Resolves issues #11 and #12

* systems-alembic:
  Show the location a kill occurred
  Add system, constellation and region attributes to Request
  Add location support in Killmails
  Fix up sys.path so evesrp can be found
  Add Alembic auto generated files
Merge branch 'sql-tuneup' into live-filters

* sql-tuneup:
  Show the location a kill occurred
  Add system, constellation and region attributes to Request
  Add location support in Killmails
  Fix up sys.path so evesrp can be found
  Add Alembic auto generated files
  Specify which columns/relations to load for request listings
  Rewrite Entity.has_permission
  Rewrite Request.payout to rely more on the database
  Convert Modifier.voided into a hybrid property
  User.permissions is now a hybrid property
  PermissionRequestListing uses a tuple of statuses instead of a callable
  Defer loading Request details until absolutely necessary
  Fix+clean up .models' __repr__ methods
  Denormalize Request.status so it's easier to query against

Conflicts:
	evesrp/templates/list_requests.html
Update filters/sorting to work with the system names
Move loading options for Request lists into a computed property

This lets subclasses load different attributes without completely rewriting the query. Used in the filter views.
Add pagination for request listings

Pagination should work both client-side with PourOver, or server-side with the
appropriate page being served directly. The browser's history state is modified
appropriately if the pages are being navigated through client-side.