Ux email app bugs left

[\#829078](https://bugzilla.mozilla.org/show_bug.cgi?id=829078) - [email] adjust and remove some styles in *.css of email
[\#844995](https://bugzilla.mozilla.org/show_bug.cgi?id=844995) - Setting up new email account screen updates
[\#844973](https://bugzilla.mozilla.org/show_bug.cgi?id=844973) - New Account Screen - Layout and Type updates
[\#845048](https://bugzilla.mozilla.org/show_bug.cgi?id=845048) - Email screen type and layout updates
[\#845042](https://bugzilla.mozilla.org/show_bug.cgi?id=845042) - Load more messages layout and type update
[\#844978](https://bugzilla.mozilla.org/show_bug.cgi?id=844978)  - Email Manual Setup Layout and Type updates
~~[\#844567](https://bugzilla.mozilla.org/show_bug.cgi?id=844567) - Email Layout and Font Revisions - New Account Screen~~