Account: Fix indentation
Add filters test case
tests/filters: Fix compilation
Add sql test case
Extend sql test case
Make Twitter a public class
tests/sql: Move db filename to constant

and change it to _test.db so it doesn't fuck up my auto complete.
tests/.gitignore: Fix test db filename
tests/filters: Add tweet data

The link test case is failing, showing that tweet matching is currently
broken with links