Three minor changes + GER

Hey pgAdmin-hackers,

I want to suggest three minor changes attached to this mail:

1. "couldnot" - while working with .po-files I found most strings
contain "could not [...]" while some contain "couldn't [...]" for
the sake of simplicity I adapted all short forms to the most used one.
2. "elephant" - the elephant image in the bottom right corner of the
login screen currently lays above the input fields on (very) small
screens and prevents input, so I moved the input elements one layer up.
3. "ps-typos" - found some typos in the pip-setup script, fixed them.

I'm also working on a German translation for pgAdmin. I think noone else
is currently working on this, right?
When I compile the updated catalogues I receive the folowing errors:

/error: pgadmin/translations/zh/LC_MESSAGES/messages.po:3446: the format
strings are of different kinds//
//error: pgadmin/translations/zh/LC_MESSAGES/messages.po:8045:
placeholders are incompatible/

Validating the Chinese .po file with PoEdit shows two errors:

Couldn't find the specified database. = 找不到指定的数据库 -> /duplicate
message definition.../
Close = 关闭 -> /...this is the location
of the first definition/

I couldn't find much about that on the internet. Does anyone know how to
fix this?

Good day,
Jonas Thelemann