fix Droid Sans Fallback not registered to crengine
Merge pull request #834 from chrox/fix_fallback

fix Droid Sans Fallback not registered to crengine
Merge pull request #836 from chrox/fix_835

fix #835
promote user to save PDF document after highlighting
This is a wordaround for #791.
remove global variable
remove global variable
remove global variable
Merge pull request #838 from WS64/master

refactoring: remove global variable GLOBAL_INPUT_VALUE
Add getWifiStatus function to allow checking for live wifi connection before
trying OTA Update
Merge pull request #837 from chrox/save_highlight

prompt user to save PDF document after highlighting
fix(FM): remove redundant call to lfs.dir
Merge pull request #840 from houqp/houqp-master

fix(FM): remove redundant call to lfs.dir
New input dialog with variable amount of fields
Changed the way to handle the own database file

This should make it easier to update the format of the file and also prevents errors when someone keeps this file but the deletes the original calibre file
New editor for table fields used
Change to prevent OTA Server check before wifi enabled
Merge remote-tracking branch 'upstream/master'
use conventional util name and update koreader-base
remove template pot and translated po files in the main repo
aternatively the resource file(pot file) in Transifex is updated
with `make pot` and the translated files(po files) is updated with
`make po`. `make pot po` will be handled automatically on the nightly
build machine.
remove too verbose information that is utterly untranslatable
I would suggest when creating a translate string you'd better keep
as much words together as you can other than trying to call the
`_` function on each word which may cause the final
translation in some languages unreadable.
For example, no matter how we translate the single words, the Chinese
translation of
```
_("No ") .. some_thing .. _("found ") .. _("matching") .. other_thing
```
will be nonsense.
Better way would be:
```
some_thing .. " is not found matching" .. other_thing
```