Support for account toggeling

By clicking on a “Bank” it is now possible to toggle view of all
accounts.
Fix for #336 - show all account types @ avanza
Toggle will only activate on longpress,

to keep old functionality of click
Code cleanup
Added menu item for hide all accounts
Adds model classes for credit cards.
Adds credit card transactions for Swedbank and Sparbankerna. Fixes #339 and #332
Merge pull request #344 from goober/feature/332-swedbank-credit-card-zero-balance

332 swedbank credit card zero balance
Fix balance Tillgängligt nu for old and new cards
New certificate for CSN. Fixes #346.
Merge pull request #347 from auno/346-csn-certificate-not-trusted

New certificate for CSN
New certificate for EasyCard. Fixes #350
New certificate for Meniga. Fixes #351
New certificate for Brummer KF. Fixes #349
New certificate for Ica
Removes outdated certificate for PayPal
Rename new certificate for PayPal
New certificate for PlusGirot. Fixes #359
Removes outdated certificate for ICABanken
Rename current certificate for ICABanken