Update admin-plugins.php

fixed some typos
Update admin-albumsort.php

typo
Merge pull request #529 from sphoto/patch-1

Update admin-plugins.php
Merge pull request #530 from sphoto/patch-2

Update admin-albumsort.php
Update index.php

typo
Update admin-pages.php

typo
Update admin-edit.php

typo
Update admin-news-articles.php

typo
Update zenpage-admin-functions.php

typo
Update menu_manager-admin-functions.php

typo
Merge pull request #534 from sphoto/patch-4

Update index.php
Merge pull request #535 from sphoto/patch-3

Update admin-pages.php
Merge pull request #536 from sphoto/patch-5

Update admin-edit.php
Merge pull request #537 from sphoto/patch-6

Update admin-news-articles.php
Merge pull request #538 from sphoto/patch-7

Update zenpage-admin-functions.php
Merge pull request #539 from sphoto/patch-8

Update menu_manager-admin-functions.php
Fixes missing label start
use fixed custom size for thumbnails

Before the display used whatever the default thumb size was, which could
be quite large on some custom themes. This change fixes the size at 60
px
different messages for different issues

changes the messages so that we can tell which test failed when invalid
theme file editing is requested.
abort setup autorun when option table unique key is detected missing

#532