Merge pull request #52 from DevlinRocha/37-dark-mode

Use theme colors; Add hover effect to dark theme

Update style to use theme colors

Update and refactor style; Expand dark theme

Update dark theme when no roles are available

Expand dark theme to assign role dropdown menu

Change separating character; Expand dark theme

Change character separating role

Expand dark theme; Update style of input

Expand dark theme to server roles settings

Expand dark theme to `ServerOverview`

Expand dark theme to `ServerSettings` and sidebar

Expand dark theme; Refactor style

Refactor color theme; Add new colors to dark theme

Merge remote-tracking branch 'origin' into 37-dark-mode