en to ug translation catalogue (3 entries)

[ctx: Toolbar button tooltip for the Unlink feature.]
en: Unlink
ug: ئۇلانمىنى ئۈزۈش

[ctx: Toolbar button tooltip for the Link feature.]
en: Link
ug: ئۇلانما

[ctx: Label for the URL input in the Link URL editing balloon.]
en: Link URL
ug: ئۇلاش ئادىرسى
