[FIX,DOC] Fixed erroneous link to language entities page on start page
[FIX,DOC] Removed duplicate paragraph
[DOC] Improved layout of logo in narrow windows and the display of inline-code
Merge branch 'develop' of https://github.com/bkahlert/seqan into develop

Conflicts:
	dox/pages/language_entities.dox
[FEATURE,DOC] Search field has focus on default
[DOC] Different types of functions and metafunctions are no more grouped together
[FIX,DOC] Metafunctions are now researchable, too