A "hostId" determines the current host and is appended to
the "workingdir", "pkcs11path" and "mw_geometry" settings
in the database. This allows opening the database
on different hosts without wrong workingdir or not
loadable PKCS#11 libraries
On Windows XCA goes in portable mode if no XCA registry entry is found.
On Mac and Unix it checks the XCA_PORTABLE environment to be non-empty.
In portable mode:
- The current working directory is not written to the database
- The configured language and history of opened databases is
forgotten after a restart of XCA
- No registry entry is required nor written.
- No unexpected files are written to disk, except exported items.
- Portable mode is displayed in the "About" dialog
If setup.exe or "make install" are not used,
- XCA is not assigned as app for any file types
Add configuration values in the Options dialog to
control the time when certificates get marked yellow and
the expiration alarm time in calendar entries.
Add settings class to access the settings table in the database
Cache values and improve database writes.
Options dialog simplified
Replace getSetting / storeSetting
Unpack option flags to rows in the settings
