Improve handle of bookcreator requests and some minor fixes
Now bookcreater doesn't allow empty title and selection anymore
Fix some missing globals or redundant
Fix for bookcreator: Catch title before cache, otherwise the downloaded page got nonsens filename.
NOT FIXED: cached pdf don't depends on given title from Bookcreator. So when it changed, the cache has still the old one.
suppress warnings of opendir like 'no such file/dir'
perform the  replacements of the citation per rendered page.
Merge pull request #56 from Klap-in/minorfixesaction

Improve handling of bookcreator requests and some minor fixes
update of readme about replacements
minor layout readme
Merge pull request #58 from Klap-in/master

update readme
some minor modifications to mpdf/mpdf.php
fix port handling in mpdf. Suggestion from http://www.mpdf1.com/mpdf/forum/comments.php?DiscussionID=802
Merge pull request #18 from samwilson/issue-17

Don't include template styles twice. #17
New replacement pattern to pull metadata values in from the Data plugin.  Patterns are of the form: @DATA:column@