Additional msgctxt needed for KMyMoney translation

[Shinjo Park]

Hi,

Korean translator here, and I need some additional message contexts for more 
accurate translation.

Currently in kmymoney.pot file:
#: kmymoney/dialogs/kequitypriceupdatedlg.ui:59
#: kmymoney/widgets/kmymoneycashflowcombo.cpp:64
#: kmymoney/widgets/transaction_p.h:82 kmymoney/widgets/transaction_p.h:84
#, kde-format
msgid "From"

In kmymoney/dialogs/kequitypriceupdatedlg.ui, the word "From" is used as the 
pair From/To date range, while in kmymoney/widgets/kmymoneycashflowcombo.cpp 
and kmymoney/widgets/transaction_p.h the word "From" is used as the pair Pay 
to/From. We are translating them differently in Korean.

#: kmymoney/dialogs/kavailablecurrencydlg.ui:52
#: kmymoney/dialogs/kcurrencyeditdlg.ui:52
#: kmymoney/dialogs/settings/ksettingsonlinequotes.cpp:84
#: kmymoney/models/equitiesmodel.cpp:354 kmymoney/models/securitiesmodel.cpp:
275
#: kmymoney/plugins/csv/import/investmentwizardpage.cpp:69
#: kmymoney/plugins/csv/import/investmentwizardpage.ui:308
#: kmymoney/plugins/csv/import/securitiesdlg.ui:77
#, kde-format
msgid "Symbol"

Also, the "symbol" for a currency and the ticker "symbol" for a stock is 
translated differently in Korean.

Please consider adding msgctxt for those strings.

Shinjo