Adds unique classes to breadcrumbs output

With this change every bredcrumbs instance has a unique class
(breadcrumbs-x - x is an integer starting with 1) which can be used to
identify the instance directly (Template Blue Eagle).
K3.1 feature-hmvc : Error on index page #2322
Merge pull request #2359 from mahagr/develop

Merge all changes from K3.0.5
K3.1 Crypsis: you can the spoiler only once open and close #2334
Merge pull request #2360 from xillibit/k31_bugs3

K3.1 Crypsis: you can the spoiler only once open and close #2334
Merge pull request #2325 from xillibit/k31_bugs2

K3.1 feature-hmvc : Error on index page #2322
Merge pull request #2111 from Kubik-Rubik/develop

Adds unique classes to breadcrumbs output
Merge branches 'develop' and 'feature-hmvc' of github.com:Kunena/Kunena-Forum into develop