BISERVER-10132 - Administration:  The confirmation UI for deleting roles does not follow UX standards

switched from GwtMessageBox to MessageDialogBox
BISERVER-10086 - Warning message for renaming a file says Dont instead of Don't (might be JavaScript issue)

renamed "Don't" to "Do not"
BISERVER-9592 - Changing the theme causes users to lose unsaved content.

What was done:
1) added corresponding changes to resource files
2) changed SwitchThemeAction

BISERVER-9592 - Changing the theme causes users to lose unsaved content.

What was done:
1) fixed a typo in the message
BISERVER-10134 - Getting warnings about unsaved admin changes upon *entering* the admin perspective
BISERVER-11057 - After pressing OK in Properties dialog all files are disappeared till refreshing the folder

clear cache at initialization of fileBrowserFileListModel for browser.js
and at activation of filebrowser perspective
BISERVER-10909 - Need to add captions for Edit/Add/Delete icons on the blockout time list

What was done:
1) Added localizable messages
2) attached messages to tooltips
BISERVER-10210 - As an Administrator, I want to be able to export the full repository with import-export.sh

all repository will be exported(without "etc" folder);
only by user with AdministerSecurityAction, others will get InitializationException;
hidden files are included
BISERVER-11194 - In PUC browser while switching between empty user's folders "no files" text disappears
[PIR-981] - Fixed metadata.xml pointing to indexing a wrong access type
Merge pull request #1392 from webdetails/PIR-981

[PIR-981] - Fixed metadata.xml pointing to indexing a wrong access type
Merge pull request #1377 from aliakseihaidukou/BISERVER-10134

BISERVER-10134 - Getting warnings about unsaved admin changes upon *ente...
Merge pull request #1374 from aliakseihaidukou/BISERVER-10132

BISERVER-10132 - Administration:  The confirmation UI for deleting roles...
Merge pull request #1373 from aliakseihaidukou/BISERVER-10086

BISERVER-10086 - Warning message for renaming a file says Dont instead o...
Merge pull request #1380 from aliakseihaidukou/BISERVER-11057

BISERVER-11057 - After pressing OK in Properties dialog all files are di...
Merge pull request #1375 from kolinus/BISERVER-9592

BISERVER-9592 - Changing the theme causes users to lose unsaved content.
Merge pull request #1383 from kolinus/biserver-10909

BISERVER-10909 - Need to add captions for Edit/Add/Delete icons on the b...
[PDI-10781] - Adding port number to the general attributes map
Merge pull request #1395 from rmansoor/PDI-10781

[PDI-10781] - Adding port number to the general attributes map
BISERVER-10156 - Read Only users can Copy/Paste in UI, but no error when it fails.
BISERVER-10249 - The browser in run in background wizard does not update correctly if you rename a folder

need to update cache after renaming folder