New feature, Navigation hover show full name

Some database/table/column name just so long that can't show it completely,
relative to adjust the Navigation's width, hover to show it fully is better.

Btw, some end-sign notes "end" is uppercase, some is lowercase, i unify them to lowercase

Signed-off-by: Edward Cheng <c4150221@gmail.com>
Bind show full name event on #pma_navigation_tree_content into end of PMA_showCurrentNavigation()

Signed-off-by: Edward Cheng <c4150221@gmail.com>
Fix bug

Signed-off-by: Edward Cheng <c4150221@gmail.com>
Merge pull request #945 from WhaleWatching/nav_hover_show_full

New feature, Navigation hover show full name