Randomly generate IDs for new modules and widgets (i42)
add color palette info (needs to be updated later)
Add random generation of color to new modules and apply new color palette
fix minimize heights
Fix widget sortable placeholder height and width (i43)
fix add/remove column action
add bottom border for dashboard
Fix single module incorrect calculation (i39)
fix single module problem and horizontal resizing
Merge pull request #47 from caneruguz/bug_fixes

Bug fixes