use tpl_toc to determine if TOC should be shown, to affect layout

tpl_toc returns NULL if there is no TOC to show so we can change the
grid layout later. Not sure if we could save the tpl_toc return value
then use it later instead of regenerating again to save a bit of time..
fixed order of css inclusion
removed "-" from path – dokuwiki complains about it
added missing menu button for small screen sizes
merged alternative to issue #8
Merge pull request #10 from celsworth/intelligent_toc

use tpl_toc to determine if TOC should be shown
Syntax fix on issue #8 commit
mend
Merge branch 'master' of https://github.com/chtaube/dokubootstrap-simplified into chtaube-master
Merge branch 'chtaube-master'

Merge merge request in issue #12
Merge branch 'chtaube-master'

Merge merge request in issue #12
Merge branch 'master' of https://github.com/badeendjuh/dokubootstrap-simplified
template.info.txt update