CS-5476: [Calendar] RSS Feed: tool tips use Key

Fix description: use label defined in resource bundle for Add Calendar, Reset URL and Generate URL.
CS-5476: [Calendar] RSS Feed: tool tips use Key

Fix description: use label defined in resource bundle for Delete icon.
CS-5476 [Calendar] RSS Feed: tool tips use Key
Merge branch 'fix/2.2.x/CS-5476' into stable/2.2.x