Calculating uptime without external library
Calculating uptime directly
OPAL-1928: Initial categories editor modal window
OPAL-1928: Variable category edition window (basic validation missing)
OPAL-1928: Added validation of duplicated category name on save and add
OPAL-1928: Revert unnecessary change to checkbox column
OPAL-1928: Revert local changes to TempDefaultConfig
Merge pull request #270 from emorency/feature/OPAL-1928-categories-edit-ui

OPAL-1928: categories edit ui