Reindent and unify codebase to 2-space indentation.

* [UI] Sortable Tables Header By Click

* get rid of padding above header

* restart CI

* fix lint

* convert getArrow JS to SortArrow go func

* addopt SortArrow funct

* suggestions from @silverwind - tablesort.js

Co-authored-by: silverwind <me@silverwind.io>

* Update web_src/js/features/tablesort.js

Co-authored-by: silverwind <me@silverwind.io>

* Update web_src/js/features/tablesort.js

Co-authored-by: silverwind <me@silverwind.io>

Co-authored-by: silverwind <me@silverwind.io>

* Properly truncate system notices

As noted in #11658 the system notifications list will always suffix
system notices with ... even when the notice is longer than 120
characters.

Instead we should use .text.truncate to auto truncate and make the
notices clickable to view their details.

Signed-off-by: Andrew Thornton <art27@cantab.net>

* As per @CirnoT make table cell clickable

* ensure that pre wraps

Signed-off-by: Andrew Thornton <art27@cantab.net>

Co-authored-by: techknowlogick <techknowlogick@gitea.io>

Signed-off-by: jolheiser <john.olheiser@gmail.com>

* Add form and convert to POST

* Redirect for flash

Signed-off-by: jolheiser <john.olheiser@gmail.com>

* UI: Make document body a flexbox

Fixes: https://github.com/go-gitea/gitea/issues/6118

* ie11 fixes

* increase padding to 80px

* add flex-grow

This does not change any content and generated gogs.css is still the same.