Dashboard (listing) styles

- bootstrap class=table has to much css weight on children,
   removed table class and added base-styles to
   dashboardlisting th/td.
- button btn-sm used wrong font
- excerpt height converted to max-height to...
- td vertical-align top
- set some (base) line-heights on td
Merge pull request #1987 from GDmac/2.0

Dashboard (listing) styles fix #1985
Really fix #1985. Batship crazy line-height on B tag
Fix #1983 margins
Fixes error in backend.
Merge pull request #1988 from GDmac/2.0

Fix #1983 and really fix #1985
Compiled CSS
jquery ui relative path for icons
Add type hinting
Play ball with instanceof
Simplify setContent() as we know we have a Bolt\Content object
PHPDocs
Update comment to reflect change in layout
Strip all parent paths from fatal errors
Remove unneeded DIRECTORY_SEPARATOR
require_once returns true at second call
Strip %info% block from handlers that don't use it
Homogenize getPath() result
style
codingstyle fixes
One less in insight: Text files should end with a newline character