Fixed the broken start index calculation when requesting records from…

Improvements to dynamic covers

- For the record, it was the Bootstrap accessibility plugin, and not Bootstrap itself, that was responsible.

Convert sources setting to an array right away and use it to determin…

Convert sources setting to an array right away and use it to determine if a source is valid so that the contents of $sourcePriority doesn't affect the check.

Conflicts:
	themes/bootstrap3/js/record.js

- Expanded configuration documentation
- Added more color-oriented configuration options
- Some fixes to text sizing

- Do not strtoupper text (caused problems with accents)
- Allow more configuration via config.ini
- Added additional font options

Conflicts:
	themes/bootstrap3/js/common.js
	themes/bootstrap3/js/record.js

Conflicts:
	themes/bootstrap3/js/record.js

Using the block attributes of each record, we now:
- Don't display links that will be blocked
- Display links that are definitely available
- For 'check' links, display 'check' language, check via AJAX, hide if blocked