New icons

[JarrettR]

Some should be able to be adapted from existing ones:

• "Door access" at top
• "Newsletter" at admin userlist (button not added yet)

[JarrettR]

Need badge icons:

• Vetted for keyholder
• Keyholder
• Laser cutter cert
• CNC/Mill/lathe cert

[RobertButterworth]

These are all done now, just need to be checked on the site