Update translation keys

Customize the branding and updated Russian translation.
Typo fix
Proposed fix for hasOne not working in Relation field type
Minor code clean
Use popup loading indicator on relationcontroller behavior
Add useAnimation to popover, refactor popup so it behaves more like popover
Close should trigger Hide events
Refs #729 - Fixes CMS permissions, should not show "pages" content by default
Fixes #521 - Redirect to next available menu item when Dashboard access is denied
Fixes #16 - Adds tooltip to counter in navigation using 'counterLabel' property
Fixes #9 - Adds maintenance mode setting to the CMS