Remove references of being a fork and changed inconsistencies in "Database" (#58)
* Removed references of being a fork
* Fixed inconsistency of "DataBase" vs "Database" which caused some 404 errors.
Chose for "Database" because it corrosponds with e.g. "FastDb".
* Added files required for Docsify
* Fixed invisible links on cover page
* Added references to Docsify and the Github Pages site
* Applied cover-page styling to only the cover part
* Added disclaimer to home-page
* Fixed some bugs and added syntax highlighting for C++.
Bugs fixed:
- Added some sidebar padding
- Fixed some typo's in the sidebar and folder structure which were resulting in errors
- Changed TOC sub-level rendering to 2 layers