* Troubleshooting guide for filters.

After conversation with @flamber, split this into one guide for simple filters and one for linked filters. The explanation at the top of the second page may still need some work...

* Updating filter troubleshooting

* Troubleshooting when you can't see the tables you should.

* Why is my dashboard slow?

* Troubleshooting: can't send email

* Adding @flamber's batch script-style guide

* Update docs/troubleshooting-guide/cant-send-email.md

Co-authored-by: flamber <1447303+flamber@users.noreply.github.com>

* Update docs/troubleshooting-guide/cant-send-email.md

Co-authored-by: flamber <1447303+flamber@users.noreply.github.com>

* Update docs/troubleshooting-guide/cant-send-email.md

Co-authored-by: flamber <1447303+flamber@users.noreply.github.com>

* Fixing first item

* Addressing feedback

* Update docs/troubleshooting-guide/cant-send-email.md

Co-authored-by: Jeff Bruemmer <jeff@metabase.com>

* Update docs/troubleshooting-guide/cant-send-email.md

Co-authored-by: Jeff Bruemmer <jeff@metabase.com>

* Update docs/troubleshooting-guide/cant-send-email.md

Co-authored-by: Jeff Bruemmer <jeff@metabase.com>

* Adding flamber's comment

* Update docs/troubleshooting-guide/cant-see-tables.md

Co-authored-by: Jeff Bruemmer <jeff@metabase.com>

* Update docs/troubleshooting-guide/cant-see-tables.md

Co-authored-by: Jeff Bruemmer <jeff@metabase.com>

* Update docs/troubleshooting-guide/cant-see-tables.md

Co-authored-by: Jeff Bruemmer <jeff@metabase.com>

* Splitting entry

* Update docs/troubleshooting-guide/cant-see-tables.md

Co-authored-by: Jeff Bruemmer <jeff@metabase.com>

* Update docs/troubleshooting-guide/cant-see-tables.md

Co-authored-by: Jeff Bruemmer <jeff@metabase.com>

* Update docs/troubleshooting-guide/cant-see-tables.md

Co-authored-by: Jeff Bruemmer <jeff@metabase.com>

* Troubleshooting timezones

* Reformatting the filter troubleshooting guides

* Partial update to troubleshooting filters

* specify sql questions

* link

* update relative links

* more link fixes

* still more links

* specify dashboard filters

* fix typo

* Italicizing one more word

* Unifying all troubleshooting guides so far

* Update docs/troubleshooting-guide/cant-see-tables.md

Co-authored-by: Jeff Bruemmer <jeff@metabase.com>

* Update docs/troubleshooting-guide/cant-see-tables.md

Co-authored-by: Jeff Bruemmer <jeff@metabase.com>

* Incorporating suggestion

* Update docs/troubleshooting-guide/my-dashboard-is-slow.md

Co-authored-by: Jeff Bruemmer <jeff@metabase.com>

* Update docs/troubleshooting-guide/my-dashboard-is-slow.md

Co-authored-by: Jeff Bruemmer <jeff@metabase.com>

* Update docs/troubleshooting-guide/my-dashboard-is-slow.md

Co-authored-by: Jeff Bruemmer <jeff@metabase.com>

* Update docs/troubleshooting-guide/my-dashboard-is-slow.md

Co-authored-by: Jeff Bruemmer <jeff@metabase.com>

* Update docs/troubleshooting-guide/my-dashboard-is-slow.md

Co-authored-by: Jeff Bruemmer <jeff@metabase.com>

* Another small fix

Co-authored-by: flamber <1447303+flamber@users.noreply.github.com>
Co-authored-by: Jeff Bruemmer <jeff@metabase.com>
Co-authored-by: jeff bruemmer <jeff.bruemmer@gmail.com>