gdebi-gtk
works just fine for me on live session iso.
About online panel. Do following.
edit the desktop file,
gksudo gedit /usr/share/applications/unity-online-accounts-panel.desktop
Delete all and and then paste following:
[Desktop Entry]
Exec=unity-control-center online-accounts
Icon=unity-online-accounts
Terminal=false
Type=Application
NoDisplay=false
StartupNotify=true
Categories=GNOME;GTK;Settings;DesktopSettings;X-Unity-Settings-Panel;X-GNOME-PersonalSettings;OnlineAccounts;
OnlyShowIn=Unity;
X-Unity-Settings-Panel=online-accounts
# Translators: those are keywords for the online-accounts control-center panel
Keywords=Google;Facebook;Twitter;Yahoo;Web;Online;Chat;Calendar;Mail;Contact;ownCloud;Kerberos;IMAP;SMTP;Pocket;ReadItLater;
Name=Online Accounts
Comment=Connect your online accounts
X-Ubuntu-Gettext-Domain=unity-control-center
Then restarts. And open online-accounts. For me itâs working except I canât scroll.
When you clicked install button on gdebi-gtk what happens?
Does it ask for user password? a) when on live iso, b) log-in as regular user.
I am using latest version of gdebi on bionic.
I did that already couple days ago. Nothing. One install just has âOnline Accountsâ in the u-c-c. When you click it it does nothing and the u-c-c will not close.
Did you install the deb (donât use the ppa, but the debs of the link)? What is the content of /usr/share/applications/unity-online-accounts-panel.desktop? You need to add X-Unity-Settings-Panel=online-accounts otherwise it wonât work.
You donât need to write with images. Just text is enough. 
A picture speaks a thousands of words 
[Desktop Entry]
Exec=unity-control-center online-accounts
Icon=unity-online-accounts
Terminal=false
Type=Application
StartupNotify=true
Categories=GNOME;GTK;Settings;DesktopSettings;X-Unity-Settings-Panel;X-GNOME-PersonalSettings
OnlyShowIn=Unity;
Translators: those are keywords for the online-accounts control-center panel
Keywords=Google;Facebook;Twitter;Yahoo;Web;Online;Chat;Calendar;Mail;Contact;ownCloud;Kerberos;IMAP;SMTP;Pocket;ReadItLater;
Name=Online Accounts
Comment=Connect your online accounts
X-Ubuntu-Gettext-Domain=unity-control-center
Ok⌠it works now. No side scrollbar.
Good work Khurshid.
Have RSI back spasms atm. Maybe Iâll beg the community for a new chair . jk 
Your back is still troubling? Relax. Take a break. Get well soon.
I am fixing the scrollbar issue.
Thanks. ! We are very much on schedule. You are doing an exceptional work at tending to details.
I fix the scrollbar issue. Download from here https://code.launchpad.net/~khurshid-alam/+archive/ubuntu/experimental-build/+build/14313441
You only need to install libunity-control-center-1 and unity-control-center
How many days till feature freeze?
I imported gnome online-accounts panel into u-c-c. Can this be merged in this cycle? Who is going to review merge request?
As Unity 7 is not a derivative, does the feature freeze matter?
We are doing builds off of bionic-beaver-amd64.iso so anything but unity meta will freeze.
Yes. After feature freeze you canât merge anything for unity even if itâs on the universe.