Fixed that gravatar doesn't updated at login sometimes

[JayDi85]

Avatar image from gravatar must be updated on each user's login. But sometime it doesn't work. After research found a possible problem:

• Current timeout for gravatar: 1 second. It's too low;
• Current download times for gravatar images by API: 0.9 - 1.2 second.

PR increases a timeout from 1 to 5 seconds, so that must fix the problem.

[coveralls]

Pull Request Test Coverage Report for Build 5033786696

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 95.736%

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Totals
Change from base Build 5033763935:	0.0%
Covered Lines:	247
Relevant Lines:	258

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💛 - Coveralls