Several imptant changes of text to fit into available window
Corrections in dialog window Style.
Merge pull request #249 from SergeyChepurin/SergeyChepurin/wps_i18n

Several changes of text to fit into available window
Some changes to improve Spreadsheets dialogs.
Merge pull request #250 from SergeyChepurin/SergeyChepurin/wps_i18n

Some changes to improve Spreadsheets dialogs.
Create lang.conf
Merge pull request #251 from vicentemperez/patch-1

Create lang.conf
Several corrections to improve interface.
Merge pull request #252 from SergeyChepurin/SergeyChepurin/wps_i18n

Several corrections to improve interface.
updated to latest translations & fixed typo #156 #228
updated sample
renamed directory usr to data
updated de_DE & es_ES translation
Added translations missed in Qt Linguist.
Merge pull request #253 from SergeyChepurin/SergeyChepurin/wps_i18n

Added translations missed in Qt Linguist.
Update et.ts
Merge pull request #254 from Eignar17/patch-1

Update et.ts
Corrected some terms for better appearance and understanding.
Merge pull request #255 from SergeyChepurin/SergeyChepurin/wps_i18n

Corrected some terms for better appearance and understanding.
Several changes to improve GUI.