Fix samba password change

Password changing was not possible because var 'p' was used in two ways.
Merge pull request #266 from ev0lister/patch-1

Fix samba password change
[webserver_common] sort entries (fixes #260)
Merge branch 'dev' of github.com:Eugeny/ajenti into dev
[ui] avoid jumping progress indicator (fixes #264)
Added hdparm Widget