Add .desktop to Utility category
Add link to RELEASE
Be less strict in enabling the Database and Editor menus

Fixes #44
Days 29-31 are never allowed by these rules
Display correct warnings for basic rules

Also fix several 80-character lines
Fixes #159
Always enable Save/Close/Apply all menu actions

Fixes #182
Init static modules folder
Include TextUrlCtrl class statically

Fixes #184
Preserve database order when restoring session

Fixes #188
Add useful comments
Refresh tasklist when updating an item's text

Fixes #196
Search next occurrences only after pasting all the items

Fixes #201
Improve code (see previous commit)
Merge branch 'develop' into develop-links
Sync text and drop rules when linking

Fixes #202
Move notes to #214
Fix bug
Use monospace in editor

Fixes #205
Move snooze and dismiss all buttons in line with snooze configuration

Fixes #189
Tasklist: expand Title column

Fixes #83