Incorrect camel case in strings

[danmarsden]

Moodle uses sentence case - please check your lang strings as some use camel case.

for example strings like:
$string['mystring'] = "My String";
should be:
$string['mystring'] = "My string";

examples from your code:
$string['option_link_info'] = 'Link Title';
$string['background_image'] = 'Background Image';
$string['export_submissions'] = 'Export Submissions';

Note: this is not a blocker for approval in the plugins db