Also renames `forgot_password` translation key to
`forgot_password_title` and `forget_password` to
`forgot_password`
Includes entry in CHANGELOG about the breaking change
(and some markdown fixes in there)
This commit improves templates readability, since all of them use consistent
indent with all template command blocks indented too.
1. Indents both HTML containers such as <div>, <p> and Go HTML template blocks
such as {{if}} {{with}}
2. Cleans all trailing white-space
3. Adds trailing last line-break to each file
