Update contact information and dokuwiki.org links (SSL/TLS)

update contact information

[TASK] re-branding: Bitkollektiv -> SYN Systems

fix wrong line endings in language files (WIN->UNIX)

remove unnecessary config option 'vector_donate_default'

update development email contact address

Improve compatibility for pre-Angua releases

Media manager rework

DokuWiki's new media manager made the 'vector_mediamanager_embedded' option
obsolete, therefore this removes it (including relating language vars and
stuff). Additionally, some

Media manager rework

DokuWiki's new media manager made the 'vector_mediamanager_embedded' option
obsolete, therefore this removes it (including relating language vars and
stuff). Additionally, some CSS for the new media manager was added.

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release preparations and final css improvements

initial commit