v0.26.2-ls43

LinuxServer Changes:

Rebase to Alpine 3.9, add MySQL init logic.
bookstack Changes:

This release contains the following fixes and changes:

• Updated Russian translations. Thanks to @kostefun. (#1446, #1445, #1444, #1443)
• Updated Dutch translations. Thanks to @NootoNooto. (#1437)
• Updated page navigation to exclude empty heading items. (#1429)
• Updated custom-homepage views to display more consistently. (#1423)
• Updated image uploads to resize at double the previous resolution. (#1108)
• Fixed issue where chapter description would not show on book export. (#1465)
• Fixed page navigation to work on when used on mobile screen sizes. (#1454)
• Fixed issue casing a redirect to the 404 page upon login. (#1452)
• Fixed missing search bar on mobile search page. (#1450)
• Fixed issue where a page could be deleted when previously set as the homepage option. (#1447)
• Fixed issue causing horizontal scrollbar to show on some mobile views. (#1441)
• Fixed text shown on 'Info' mobile tab being overly faded-out. (#1441)
• Fixed issue where some UI elements would shown over the page editor when in mobile full-screen mode. (#1424)
• Fixed issue where pasting table content would insert as an image instead of a table or text. (#987)
• Fixed issue where book description would not show if it contained multi-byte characters. (#816)