XWIKI-1342: Colibri theme - Mapping .text-muted-smaller and document-title paddings

- Removed duplicates after https://github.com/evalica/bootswatch/commit/6a63745ffb7dd857bd4adf1bbe5200cbe139cd29 and https://github.com/evalica/bootswatch/commit/e6bcccf3f7ca17e4b654820d6e463cf4350da2ae