Merge pull request #161 from Useful-Innovation/changes

code clean-up
Merge pull request #162 from Useful-Innovation/changes

changed some units
added invoice number, date & preview
Merge pull request #163 from Useful-Innovation/johans-fixes

added invoice number, date & preview
kr to sek & added confirm on send invoice
Merge pull request #164 from Useful-Innovation/johans-fixes

kr to sek & added confirm on send invoice
fixed bug on create new page
Merge pull request #165 from Useful-Innovation/johans-fixes

fixed bug on create new page
fixed invoice issue
Merge pull request #166 from Useful-Innovation/johans-fixes

fixed invoice issue
fixed send invoice and some other stuff
Merge pull request #167 from Useful-Innovation/johans-fixes

fixed send invoice and some other stuff
fixed project status change
Merge pull request #168 from Useful-Innovation/johans-fixes

fixed project status change
removed some unnecessary code in send invoice
Merge pull request #169 from Useful-Innovation/johans-fixes

removed some unnecessary code in send invoice
Changed hard coded units to a constant

*Added constants.php in configure dir
*changed all hard coded units
*some minor clean-up