[Library management]: Get rid of errors in console

1. 

Preconditions:

1. Notebook is created
2. Library management popup is open for notebook

Steps to reproduce:

1. Select any library from drop down list

Actual result:

1. Error appears 'main-es2015.d121af7be5b69299f89a.js:1 ERROR TypeError: Cannot read property '0' of null'

Expected result:

1. There isn't any error

2. Sometimes when available lib list is gained successful autocomplete does not trigger and if install library the name library is conveyed as a version and library name is empty. Error appears about lower case.