UI improvement: hooks should display name only

We're now able to display a list of hooks. The UI for this should be improved:

• the UI should display the hooks name, not the full path kea (libdhcp_stat_cmds, not /usr/lib/x86_64-linux-gnu/kea/hooks/libdhcp_stat_cmds.so). the full path could possibly be displayed when you hover cursor over it.
• the name itself could be a link to appropriate section of kea.readthedocs.io (or small [doc] link added after it).