Plugin Directory (RTL) Sidebar margin

[ramiy]

So, On RTL plugin repo, we have extra margin that we don't have in the LTR repo.

It results with a narrow text area and we have few strings that shown in two lines instead of one.

See the attached screenshots.

[ramiy]

In ​wp4-rtl.css, Line 33

Replace:

#pagebody ul {
    margin-right: 16px;
}

With:

#pagebody ul {
    margin-left: 0;
    margin-right: 16px;
}

[ocean90]

In 1920:

wp4-rtl.css: Reset left margin for #pagebody ul.

Props ramiy.
Fixes #1256.