Forums: Confusion on documentation pages should be solved

[mkismy]

While English documentation has a separate wordpress instance under /documentation, other languages has articles under /support/article and this is causing inconsistency.

1. The navbar on the second row has the title "Forum" even on documentation pages. It should be "Documentation" for such pages, or revert to the previous "Support" which works fine on both forum and article pages.
2. The search box placed above the article cannot search articles but shows results from forums. Previous design had search box inside the navbar so there was no confusion but we would expect that the search box is for searching articles when it is placed here.
3. (This is more a suggestion) Can we add categories in the breadcrumb like those in English documentation?

[mkismy]

Now that the new design is applied, can you take a look at this? @ryelle