template renaming and improvements

- `Output` suffix removed from frontend templates
- indentation fixes for admin templates
- adding `formError` class to where they were missing
change table appearance
page node tree improvements

- `\cms\data\page\PageNodeTree` now provides a tree of **all** pages.
- `\cms\data\page\DrainedPageNodeTree` now includes all pages but the
specified page. Before, not accessible pages where excluded though the
tree was only used in the acp and therefore should always contain all
pages.
- `\cms\data\page\ViewablePageNodeTree` now provides a tree of all
viewable pages. Pages are considered as viewable when they are set as
visible or the current user has the permission to see invisible pages.
- `\cms\data\page\AccessiblePageNodeTree` provides a tree of all
viewable and accessible pages. Pages are considered as accessible when
the current user has the permission to access the page. This tree is
identical to the old `\cms\data\page\PageNodeTree` with the second
parameter set to `false`.
fix css class list
add package name to dashboard box selection
remove title from buttons
remove unnecessary language variable
template events
remove unnecessary language variables

- `cms.acp.content.revision.user`
- `cms.acp.page.revision.user
Merge pull request #93 from ray176/nodeTreeImprovements

page node tree improvements
Merge pull request #87 from ray176/templateRenaming

template renaming and improvements