Added mouse over titles for SB-Menu-titles..

..as discussed on 254#issuecomment-45995138
And made a final change on default.css to center icons on Sidebar top
I'm really sorry for double commit but you where faster then me with
merging^^
Fixed small glitch where titles would go mirror when toggling expanded/collapsed
Merge pull request #268 from KaivoAnastetiks/fix_sidebar_mirror_effect

Fixed small glitch where titles would go mirror when toggling expanded/c...
Merge pull request #267 from Psy-Virus/develop

Added mouse over titles for SB-Menu-titles..
Ger translation update due to latest changes +

Translation catalog updated
Merge pull request #269 from Psy-Virus/develop

Ger translation update due to latest changes +
Add CNAME file to git repository
Fix #270
Move CNAME file to github pages...
Addition to last commit

I've forgotten to include and submit the changes in
/locale/base/translation-words.txt due to the new options with Database
backend.
Also updated Ger Translation and Translation catalog regarding to the
new entries.
Merge pull request #274 from Psy-Virus/develop

Addition to last pull request #269
Fix XML API tag info (fix #281)
Merge branch 'develop' of github.com:ampache/ampache into develop
Added "real"-hover buttons for the sidebar..

..you do not have to click precisely on the text. The buttons now have a 100% width so you can better navigate.
Merge pull request #289 from Psy-Virus/patch-1

Added "real"-hover buttons for the sidebar..
Add Sort Tracks by Artist, Album, Song on playlists (fix #279)
Fix Browse page TextBox footer
Add CONTRIBUTING.md file
Add DAAP protocol support (fix #272)
DAAP session become optional