neues Attribut "active" in Account
Client gibt acitve und -inaktive Accounts zurück
wenn es inaktive Accounts gibt, wird ein separater Eintrag in der Seitenleiste gezeigt
Accounts können über das Kontextmenü (de)aktiviert werden
removing the Account functions from the client
removing the inactive Account Entry from the sidebar
adding a button to the AccountListView to hide the inactive accounts
making the "inactive accounts" button checked
saving and loading the checked state in the ClientEditor PreferenceStore
encapsulated the setting of the AccountList input to account for the filter
accounting for inactive accounts in dialogs
adding option to activate the account again if it is deactivated
Preselect account and portfolio in dividend/buy/sell dialog
Fix: Export crashes when writing Null values to CSV
Polishing feature to hide inactive (retired) accounts

- new icon to represent filter
- renamed property to retired to be consistent with security
- externalized and translated strings
- bumped up file layout version
Merge branch 'feature_account_filter'
Update pom.xml to latest Babel site R0.11.1
Added quote provider that extracts quotes from HTML tables

The feed provider tries to detect a table in the HTML loaded from the
feed URL. Based on the column headers it determines the types to extract
values from the table.

Issue: #114
Improved search for available exchanges on Yahoo
Improved quote extraction from HTML tables

- support thead element when defining the columns
- support other date format pattern
- support more column labels
- check if mandatory columns date and close exist

Issue: #114
Code hygiene: fixed issues reported by Sonarqube
Improved error reporting when downloading quotes from Yahoo
Set user-agent when downloading HTML tables

- sites return an alternative/mobile version if no user-agent is set
- log HTML if now quotes are found to support troubleshooting
- support more column labels: English labels

Issue: #114
Add json-simple library to product update repository
Update about dialog to include contributors
Replaced special import parsers with the new generic HTML table import
Release 0.10.0