Feat: "magic links"

[StephanH90]

It would be cool if we could have magic links, ie I can select something in timed, have a btn that I can click which generates me a link which, when sent to somebody, will create a new entry under "Timesheet" where they just have to enter the hours and text.

This could be extended where I can even specify the time and text when creating the magic link. The person just has to click the link and press save.

[derrabauke]

Implemented by #1022

[trowik]

When setting query params for not billable or needs review (either to false or true) sets the according flag in GUI after using the magic link.

Steps to reproduce:

• open magic link creator
• select Customer etc.
• select one of needs review or not billable flag
• unselect the chosen flag
• magic link creator creates a link to a report with that flag set to false
• opening the link creates a "draft" report with that flag set to true

You can still unselect the flag before saving, but that's an extra step that shouldn't happen.

[StephanH90]

this has been fixed in #1046