refactor server_privileges.php: split long code to functions
rename some functions
update function name
fix code style
refactor PMA_updateDataForDBInfo, moving parameter into function
refactor function PMA_updateDataForChangeOrCopyUser
refactor function PMA_updateDataForAddUser
fix code styles
rename function for better readability
remove unneeded parameter and return values
add test case for PMA_server_privileges
refactor mult_submits
refactor case for schema
Merge branch 'master' of https://github.com/phpmyadmin/phpmyadmin into ut_plu_dbi
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Merge pull request #587 from adamgsoc2013/UT_plu_table

fix code Static Analysis Warnings
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